Question for DSSSB JSA (Physics) 2026 - Quiz / Questions / MCQ

Objective Questions

Latest DSSSB JSA Physics Exam Question (Objective Questions), MCQ in English

Subjects : General Awareness, General Intelligence & Reasoning, General Intelligence & Reasoning Ability, Arithmetical & Numerical Ability, Hindi Language & Comprehension, English Language & Comprehension, Concerned Subject

Question Bank DSSSB Junior Scientific Assistant (Physics) Exam - English

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General Awareness

Question 1Single Answer

Yojna a weekly journal

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 2Single Answer

Kurukshetra a journal on rural development is published by

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 3Single Answer

Devaluation of a currency means

A
Fixing the value of the currency in conjuction with the movement in the value of a basket of predetermined currencies
B
Reduction in the value of a currency vis-à-vis major internationally traded currencies
C
Fixing the value of currency in multilateral consultaion with the IMF the World Bank and major trading partners
D
Permitting the currency to seek its worth in the international market

Question 4Single Answer

In India rural incomes are generally lower than the urban incomes, which of the following reasons account for this
1. a large number of farmers are illiterate and know little about scientific agriculture
2. prices of primary products are lower than those of manufactured products
3. Investments in agriculture has been low when compared to investment in industry

A
1 and 3
B
2 and 3
C
1 and 2
D
1,2 and 3

Question 5Single Answer

Which of the following programmes aims at the promotion of savings among rural women

A
Rashtriya Mahila Kosh
B
Indira Mahila Yojna
C
Jawahar Rozgar Yojna
D
Mahila Samridhi Yojna

Question 6Single Answer

10^-6 M NaOH is diluted 100 times. The pH of the diluted base is

A
between 7 and 8
B
between 5 and 6
C
between 6 and 7
D
between 10 and 11

Question 7Single Answer

The respiratory quotient during cellular respiration would depend on

A
the nature of enzymes involved
B
the nature of the substrate
C
the amount of carbon dioxide released
D
the amount of oxygen utilised

Question 8Single Answer

"Who said, 'India was a parrot unto itself'?

A
Malik Muhammad Joyce
B
Raskhan
C
Rich Khusrow
D
Rich Hasan

Question 9Single Answer

Which is the national game of Bhutan ?

A
badminton
B
basketball
C
football
D
archery

Question 10Single Answer

When was the Constituent Assembly of India formed?

A
1946
B
1947
C
1948
D
1950

Question 11Single Answer

What is the name of the next phase of India’s semiconductor programme notified by the Government in August 2026?

A
Chip India 3.0
B
India Chip Mission
C
Semicon 2.0
D
Semiconductor Bharat

Question 12Single Answer

Which country conferred its highest honour for foreign leaders, the ‘Oliy Darajali Do‘stlik Order’, on Prime Minister Narendra Modi?

A
Kazakhstan
B
Kyrgyzstan
C
Uzbekistan
D
Tajikistan

Question 13Single Answer

Where was the 2026 SCO Leaders’ Summit held?

A
Tashkent
B
Bishkek
C
Dushanbe
D
Astana

Question 14Single Answer

India and Uzbekistan recently upgraded their bilateral relationship to which level?

A
Strategic Partnership
B
Economic Partnership
C
Comprehensive Strategic Partnership
D
Defence Partnership

Question 15Single Answer

Which two organisations signed an MoU to promote smart domestic PNG meters?

A
ONGC and IOCL
B
GAIL and NTPC
C
PNGRB and EESL
D
HPCL and BPCL

Question 16Single Answer

What is the official name of Delhi?

A
Delhi Capital State
B
Federal Territory of Delhi
C
National Capital Territory of Delhi
D
National Metropolitan Territory

Question 17Single Answer

Delhi is constitutionally classified as which type of territory?

A
Federal State
B
Full State
C
Autonomous Province
D
Union Territory

Question 18Single Answer

Which city serves as the capital of India?

A
New Delhi
B
Kolkata
C
Mumbai
D
Chennai

Question 19Single Answer

What is the approximate geographical area of Delhi?

A
1,083 sq km
B
1,283 sq km
C
1,483 sq km
D
1,683 sq km

Question 20Single Answer

Delhi shares its boundary with which two states?

A
Rajasthan and Uttar Pradesh
B
Punjab and Haryana
C
Haryana and Uttar Pradesh
D
Punjab and Rajasthan

General Intelligence & Reasoning Ability

Question 21Single Answer

How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?

A
Two
B
Three
C
Five
D
Four
E
None of these

Question 22Single Answer

Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is

A
True
B
False
C
Uncertain
D
None

Question 23Single Answer

If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.

Question 24Single Answer

How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?

A
None
B
One
C
Two
D
Three
E
More than three

Question 25Single Answer

How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?

A
None
B
One
C
Two
D
Three
E
More than three

Question 26Single Answer

What is the next number in the series: 2, 4, 6, 8, ?

A
9
B
11
C
10
D
12

Question 27Single Answer

What comes next in the series: A, B, C, D, ?

Question 28Single Answer

What is the missing number in the series: 1, 4, 9, 16, ?

A
20
B
36
C
30
D
25

Question 29Single Answer

What follows in the series: 3, 6, 9, 12, ?

A
13
B
15
C
14
D
16

Question 30Single Answer

What is the next term in the series: J, F, M, A, ?

Question 31Single Answer

What comes next: 5, 10, 15, 20, ?

A
25
B
30
C
35
D
40

Question 32Single Answer

What is the missing letter: A, C, E, G, ?

Question 33Single Answer

What follows: 1, 8, 27, 64, ?

A
81
B
100
C
125
D
144

Question 34Single Answer

What is next in the series: 10, 20, 30, 40, ?

A
45
B
55
C
50
D
60

Question 35Single Answer

What comes after: Z, Y, X, W, ?

General Intelligence & Reasoning

Question 36Single Answer

Passage :

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z .

Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet ?

Question 37Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the third alphabet of each of the words is changed to the next alphabet in the English alphabetical series, which of the following will form a meaningful English word?

A
SUM
B
BIG
C
Both BIG and THE
D
FOR
E
Both FOR and BIG

Question 38Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be second from the right ?

A
AND
B
FOR
C
THE
D
BIG
E
SUM

Question 39Single Answer

Passage :

Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If second alphabet in each of the words is changed to next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed ?

A
None
B
One
C
Two
D
Three
E
Four

Question 40Single Answer

Passage :

How many letters are there in the English alphabetical series between the second letter of the word which is second from the right and the second letter of the word which is second from the left of the given words?

A
Two
B
Five
C
Six
D
Nine
E
Three

Arithmetical & Numerical Ability

Question 41Single Answer

The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?

A
51:52
B
52:53
C
51:53
D
52:55

Question 42Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 43Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 44Single Answer

Arrange in descending order: 5/8, 7/10, 3/4

A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4

Question 45Single Answer

What is (3^{^}{4} times 9^{^}{2}) ?

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 46Single Answer

If 3⁴X^-2 = 729, then find the value of X.

Question 47Single Answer

Convert 0.6 into fraction ?

A
3/5
B
2/3
C
4/5

Question 48Single Answer

The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?

A
169
B
36
C
196
D
Can not say

Question 49Single Answer

If a and b are positive integers, such that ab = 125, then (a-b)^a+b-4= ?

A
16
B
25
C
28
D
30

Question 50Single Answer

If x^*y = x² + y² – xy, then value of 9^*11 is

A
93
B
103
C
60.5
D
121

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6.	DSSSB Junior Scientific Assistant (Physics) Exam - English Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
7.	DSSSB Junior Scientific Assistant (Physics) Exam - English Description : 3000 Question with Answer.	₹181 ~~[₹500]~~
8.	DSSSB Junior Scientific Assistant (Physics) Exam - English Description : 4000 Question with Answer.	₹201 ~~[₹500]~~
9.	DSSSB Junior Scientific Assistant (Physics) Exam - English (Old) Description : 2000 Question with Answer.	₹151 ~~[₹500]~~

Arithmetical & Numerical Ability

Question 51Single Answer

Which is greater ?

A
15/16
B
17/18
C
Equal
D
Cannot compare

Question 52Single Answer

If sum of two numbers is 42 and their product is 437, then find their difference.

Question 53Single Answer

Write the 44000 in Roman numerals

A
XLI
B
XLVI
C
XLIV
D
XLVIC

Question 54Single Answer

Convert 0.0909… into fraction ?

A
1/11
B
9/11
C
1/9
D
9/10

Question 55Single Answer

What is (98 times 102) ?

A
9996
B
10000
C
10096
D
10196

Question 56Single Answer

Which is smaller ?

A
9/11
B
7/9
C
Equal
D
Cannot compare

Question 57Single Answer

Convert 0.5777… into fraction ?

A
26/45
B
52/90
C
13/22
D
5/9

Question 58Single Answer

Convert 0.81 into fraction ?

A
81/100
B
9/10
C
8/9
D
9/11

Question 59Single Answer

(63)² – (12)² =?

A
3528
B
3852
C
3582
D
3825

Question 60Single Answer

Which is greater ?

A
13/17
B
11/14
C
Equal
D
Cannot compare

Hindi Language & Comprehension

Question 61Single Answer

'ऋ' अर् में बदलता है -

A
गुण संधि के अनुसार
B
यण संधि के अनुसार
C
वृद्धि संधि के अनुसार
D
अयादि संधि के अनुसार

Question 62Single Answer

निम्न में कौनसा नासिक्य व्यंजन है -

A
त्
B
न्
C
द्
D
भ्

Question 63Single Answer

निम्न में से उत्क्षिप्त व्यंजन है -

A
ल
B
ष
C
ड़
D
न

Question 64Single Answer

निम्न में से अल्प प्राण नहीं है -

A
ख
B
ग
C
च
D
द

Question 65Single Answer

तालव्य व्यंजन है-

A
ट ड द ढ
B
च छ ज झ
C
त थ द ध
D
प फ ब भ

Question 66Single Answer

'अ' स्वर का उच्चारण स्थान क्या है -

A
मूर्धा
B
कण्ठ
C
तालु
D
ओष्ठ

Question 67Single Answer

निम्लखित मे कंट- तालव्य स्वर कौनसे है ?

A
ए - ऐ
B
ए - ओ
C
ए - ऊ
D
त - द

Question 68Single Answer

जो धातु या शब्द के अंत में जोड़ा जाता है उसे कहते है ?

A
समास
B
अव्यय
C
उपसर्ग
D
प्रत्यय

Question 69Single Answer

प्रख्यात में प्रयुक्त उपसर्ग है -

A
प्र
B
त
C
प्रख
D
आत

Question 70Single Answer

'साखी' शब्द का तत्सम रूप है -

A
सखी
B
शाखा
C
राखी
D
साक्षी

Question 71Single Answer

किस क्रम में वृत्तमुखी स्वर नहीं है -

A
आ
B
ऊँ
C
ओ
D
औ

Question 72Single Answer

उपसर्ग का प्रयोग होता है -

A
शब्द के आदि में
B
शब्द के मध्य में
C
शब्द के अंत में
D
इनमे से कोई नहीं

Question 73Single Answer

'पंडित दूध पीता है' इस वाक्य में कारक है -

A
कर्म, करण
B
सम्प्रदान, सम्बन्ध
C
कर्ता, कर्म
D
इनमें से कोई नहीं

Question 74Single Answer

'ने' किस कारक का चिह्न है -

A
कर्ता
B
करण
C
सम्प्रदान
D
कर्म

Question 75Single Answer

'वह जहाँ चाहे, जाये; मुझे क्या लेना-देना।' यह कैसा वाक्य है -

A
संयुक्त वाक्य
B
सरल वाक्य
C
मिश्रित वाक्य
D
संयुक्त-मिश्रित वाक्य

Question 76Single Answer

व्याकरण के नियमानुसार किस वाक्य में पदक्रम सही है -

A
रावण को राम ने मारा।
B
राम ने रावण को मारा।
C
मारा राम ने रावण को।
D
संयुक्त-मिश्रित वाक्य।

Question 77Single Answer

'अधिकरण' कारक का चिह्न है -

A
अरे
B
में
C
से
D
को

Question 78Single Answer

स्वर होते हैं -

A
घोष
B
अघोष
C
अल्पप्राण
D
महाप्राण

Question 79Single Answer

निम्नलिखित में से वर्त्स्य है -

A
ल्
B
ड
C
ढ़
D
स्

Question 80Single Answer

'दित्व' का प्रयोग किस शब्द में नहीं हुआ है ?

A
सच्चा
B
कुत्ता
C
बल्गा
D
बग्गा

English Language & Comprehension

Question 81Single Answer

I go to Madurai by —– Vaigai Express

A
a
B
an
C
some
D
the

Question 82Single Answer

Have the car stolen!

A
Steal the car
B
You should have the stolen car
C
Get someone to steal the car
D
They have stolen the car

Question 83Single Answer

The payment was collected by the hardworking salesman.

A
The hardworking salesman collected the payment.
B
the salesman who worked heard was able to collect the payment.
C
to collect the payment the salesman had to work hard.
D
The hardworking salesman was able to collect the payment.

Question 84Single Answer

I had to stop all my work to complete this project.

A
All other work had to be stopped to complete this project by me
B
For completing this project all other work must be stopped
C
For completing this project I had to stop all my work
D
To complete this project all other work had been stopped by me

Question 85Single Answer

They have published the names of all the successful candidates.

A
The candidates who have succeeded their names they had published.
B
The names of all the successful candidates have been published by them
C
The candidates who have succeeded their names have been published by them.
D
The names of all the successful candidate were published by them.

Question 86Single Answer

The online shopping site lowered the prices.

A
Lowering of the prices was done by the online shopping site
B
The prices were lowered by the online shopping site
C
The prices had been lowered by the online shopping site
D
The prices have been lowered by the online shopping site

Question 87Single Answer

Who taught you to drive a truck ?

A
To drive a truck by whom were you taught?
B
Driving a truck by who were you taught?
C
Driving a truck by who were you being taught?
D
By whom were you taught to drive a truck?

Question 88Single Answer

We shall invite Suresh.

A
Suresh would be invited by us
B
Suresh would have been invited by us
C
Suresh will be invited by us
D
Suresh will have been invited by us

Question 89Single Answer

Dark clouds have overcast the evening sky.

A
By the dark clouds the evening sky was overcast.
B
The evening sky has been overcast by the dark clouds.
C
Dark clouds overcastted the evening sky.
D
The sky of the evening was overcasted by dark clouds.

Question 90Single Answer

The partners will celebrate their triumph tomorrow.

A
The triumph would be celebrated by the partners a day before
B
The triumph would be celebrated by the partners a day after
C
The triumph would have been celebrated by the partners a day after
D
The triumph will have been celebrated by the partners tomorrow

Question 91Single Answer

Passage :

Direction : Question below has two blanks, each blank indicting that some thing has been omitted. Choose the word for each blank which best fits the meaning of the sentence as a whole.

The Finance Department has ……………a centralized online databank system for all statutory government bodies to …………an eye on their assets and liabilities.

A
presented , stay
B
introduced , keep
C
announce , make
D
created , let
E
proclaimed , hold

Question 92Single Answer

Passage :

Direction : The five items in this section consists of a word or group of words followed by four words as (a), (b), (c) and (d). Select the word which is nearly opposite to the meaning of the original word or group of words and mark your response as (a), (b), (c) and (d), as the case may be, in your Answer Sheet.

Assets

A
liabilities
B
responsibilities
C
estates
D
profits

Question 93Single Answer

Passage :

Direction : In the question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Affidavit

A
Affirmation
B
Slander
C
Oath
D
Testimony

Question 94Single Answer

Passage :

Direction: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Hollow

A
Alveolate
B
Cleft
C
Cavernous
D
Solid

Question 95Single Answer

Passage :

Directions: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Cosset

A
Ignoreb
B
Close
C
Caress
D
Fondle

Question 96Single Answer

Passage :

Directions: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Ogle

A
Leer
B
Gaze
C
Ignore
D
Gawk

Question 97Single Answer

Passage :

Directions:In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Intrinsic

A
Elemental
B
Innate
C
Connate
D
Acquired

Question 98Single Answer

Passage :

Direction : In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Coalesce

A
Separate
B
Adhere
C
Cleave
D
Amalgamate

Question 99Single Answer

Passage :

Directions: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Loiter

A
lag
B
Hasten
C
Amble
D
Loii

Question 100Single Answer

Passage :

Direction : Question below has two blanks, blank indicating that something has been omitted. Choose the set of words for blank which best fits the meaning of the sentence as a whole.

The protests were......... at ......... awareness among the elite and the educated.

A
held, generating
B
aimed, creating
C
targeted, awakening
D
focused, building
E
concentrated, producing

Concerned Subject

Question 101Single Answer

In ruby laser, the stimulated emission is due to transition from

A
metastable state to any lower state
B
any higher state of lower state
C
metastable state to ground state
D
any higher state to ground state

Question 102Single Answer

A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is

A
uniform throughout the pipe not zero
B
zero only along the axis of the pipe
C
zero at any point inside the pipe
D
maximum at the centre and minimum at the edge

Question 103Single Answer

convex lens made of glass has focal length 0.15m in air. If the refractive index of glass is 3/2, and that of water is 4/3 the focal length of lens when immersed in water is

A
0.45 m
B
0.15 m
C
0.30 m
D
0.6 m

Question 104Single Answer

Two sources are said to be coherent if they produce waves

A
having a constant phase difference
B
of equal wavelength
C
of equal speed
D
having same shape of wavefront

Question 105Single Answer

Three resistors 1 Ω, 2 Ω, 3Ω resistor a 3 V battery is connected. The current through 3 Ω resistor is -

A
0.75 A
B
1 A
C
2 A
D
1.5 A

Question 106Single Answer

In a common emitter amplifier the input signal is applied across

A
anywhere
B
emitter-collector
C
collector-base
D
base-emitter

Question 107Single Answer

Adding detergents to water helps in removing dirty greasy stains. This is because
1. It increases greasy stains. This is because
2. It decreases the oil-water surface tension
3. It increases the viscosity of the solution
4. Dirt is held suspended surrounded by detergent molecules

A
2 and 4
B
1 only
C
3 and 4
D
4 only

Question 108Single Answer

Choose the correct statement (a) for a cricket ball that is spinning clockwise through air
S1 : Statemlines of air are symmetric around the ball.
S2 : The velocity of air above the ball relative to it is larger than that below the ball.
S3 : The velocity of air above the ball relative to it is smaller than that below the ball.
S4 : There is a net upward force on the ball.

A
S1,S2 and S4
B
S2 and S4
C
S4 only
D
S3 only

Question 109Single Answer

Ferromagnetic materials used in a transformer must have

A
low permeability and high hysterisis loss
B
high permeability and low hysterisis loss
C
high permeability and high hysterisis loss
D
low permeability and low hysterisis loss

Question 110Single Answer

According to Newton’s corpuscular theory, the speed of light is

A
same in all the medium
B
lesser in rarer medium
C
lesser in denser medium
D
independent of the medium

Question 111Single Answer

For the constructive interference the path difference between the two interfering waves must be equal to

A
(2𝜋 + 1)λ
B
2n𝜋
C
nλ
D
n

Question 112Single Answer

The accurate measurement of emf can be obtained using

A
multimeter
B
voltmeter
C
voltameter
D
potentiometer

Question 113Single Answer

A person, with outstretched arms, is spinning on a rotating stool. He suddenly brings his arms down to his sides. Which the following is true about his kinetic energy K and angular momentum L?

A
Both K and L increase
B
Both K and L remain unchanged
C
K remains constant, L increases
D
K increases but L remains constant

Question 114Single Answer

Which of the following is not a thermodynamic coordinate?

A
Gas constant (R)
B
Pressure (p)
C
Volume (V)
D
Temperature (T)

Question 115Single Answer

An antenna uses electromagnetic waves of frequency 5 MHz . For proper working, the size of the antenna should be

A
300 m
B
3 km
C
15 m
D
15 km

Question 116Single Answer

The amount of energy released when one microgram of matter is annihilated is

A
25 kWh
B
9 x 10¹⁰ kWh
C
3 x 10¹⁰ kWh
D
0.5 x 10⁵ kWh

Question 117Single Answer

The number of significant figures in the numbers 4.8000 x 10⁴ 48000.50 are respectively

A
5 and 6
B
5 and 7
C
2 and 7
D
2 and 6

Question 118Single Answer

β-decay means emission of electron from

A
innermost electron orbit
B
a stable nucleus
C
outermost electron orbit
D
radioactive nucleus

Question 119Single Answer

An electric heater rated 220 V and 550 W is connected to AC mains. The current drawn by it is

A
0.8 A
B
2.5 A
C
0.4 A
D
1.25 A

Question 120Single Answer

A string is wound round the rim of a mounted flywheel of mass 20 kg and radius 20 cm. A steady pull of 25 N is applied on the cord. Neglecting friction and mass of the string, the angular acceleration of the wheel is

A
50 s^-2
B
25 s^-2
C
12.5 s^-2
D
6.25 s^-2

Question 121Single Answer

A billiards player hits a stationary ball by an identical ball to pocker the target ball in a corner pocket that is at an angle of 35^o with respect to the direction of motion of the first ball. Assuming the collision as elastic and that frictional and rotational motions are not important, the angle made by the target ball with respect to the imcoming ball is

A
35^o
B
50^o
C
55^o
D
60^o

Question 122Single Answer

A body of mass 0.05 kg is observed to fall with an acceleration of 9.5 ms^-2. The opposing force of air on the body is (g = 9.8 ms^-2)

A
0.015 N
B
0.15 N
C
0.030 N
D
zero

Question 123Single Answer

The colloidal solution in which both the dispersed phase and dispersion medium are liquids are called

A
emulsions
B
gels
C
foams
D
liquid crystals

Question 124Single Answer

In fog, photographs of the objects taken with infrared radiations are more clear than those obtained during visible light because

A
I-R radiation has lesser wavelength than visible radiation
B
scattering of I-R light is more the object is less
C
the intensity of I-R light is more the object is less
D
scattering of I–R light is less than visible light

Question 125Single Answer

Three concurrent co-planar forces 1 N, 2 N and 3 N acting along different directions on a body

A
can keep the body in equilibrium if 1 N and 3 N act at right angle
B
can keep the body in equilibrium if 1 N and 2 N act at right angle
C
cannot keep the body in equilibrium
D
can keep the body in equilibrium in 1 N and 3 N act at an acute angle

Question 126Single Answer

Sound waves transfer

A
only energy not momentum
B
energy
C
momentum
D
both (a) and (b)

Question 127Single Answer

G P Thomson experimentally confirmed the existence of matter waves by the phenomena

A
diffraction
B
refraction
C
polarisation
D
scattering

Question 128Single Answer

The resistance of a wire at 300 K is found to be 0.3 Ω. If the temperature coefficient of resistance of wire is 1.5 x 10^-3 K^-1, the temperature at which the resistance becomes 0.6 Ω is

A
720 K
B
345 K
C
993 K
D
690 K

Question 129Single Answer

Two luminous points sources separated by a certain distance are at 10 km from an observer. If the aperture of his eye is 2.5 x 10^-3 m and the wavelength of light used is 500 nm the distance of separation between the point sources just seen to be resolved is

A
12.2 m
B
24.2 m
C
2.44 m
D
1.22 m

Question 130Single Answer

A door 1.6 m wide requires a force of N to be applied at the free end to open or close it. The force that is required at a point 0.4 m distance from the hinges for opening or closing the door is

A
1.2 N
B
3.6 N
C
2.4 N
D
4 N

Question 131Single Answer

Temperature can be expressed as derived quantity in terms of

A
length and mass
B
mass and time
C
length, mass and time
D
None of these

Question 132Single Answer

Electron volt is a unit of

A
potential difference
B
charge
C
energy
D
capacity

Question 133Single Answer

Dimensions of impulse are

A
[MLT ^–1]
B
[MLT²]
C
[MT^–2]
D
[ML^–1T^–3]

Question 134Single Answer

Potential is measured in

A
joule/coulomb
B
watt/coulomb
C
newton–second
D
None of these

Question 135Single Answer

One Nanometer is equal to

A
10^–9m
B
10^–6m
C
10^–10m
D
10^–3m

Question 136Single Answer

Maxwell is the unit of

A
magnetic susceptibility
B
intensity of Magnetisation
C
magnetic Flux
D
magnetic Permeability

Question 137Single Answer

Which of the following is derived physical quantity ?

A
Mass
B
Velocity
C
Length
D
Time

Question 138Single Answer

What are the units of magnetic permeability ?

A
Wb A^–1 m^–1
B
Wb^–1 Am
C
Wb A m^–1
D
Wb A^–1 m

Question 139Single Answer

The dimensions of pressure gradient are

A
[ML^–2 T^–2]
B
[ML^–2 T^–1]
C
[ML^–1 T^–1]
D
[ML^–1 T^–2]

Question 140Single Answer

The dimensions of Rydberg's constant are

A
[M⁰L^–1T]
B
[MLT^–1]
C
[M⁰L^–1T⁰]
D
[ML⁰T²]

Question 141Single Answer

'Farad' is the unit of

A
resistance
B
conductance
C
capacitance
D
inductance

Question 142Single Answer

S.I. unit of surface tension is

A
degree/cm
B
N/m
C
N/m²
D
Nm

Question 143Single Answer

Which one of the following pairs does not have the same dimension ?

A
Potential energy and Kinetic energy
B
Density and specific gravity
C
Focal length and height
D
Gravitational force and frictional force

Question 144Single Answer

Which one of the following physical quantity has the same unit as that of pressure ?

A
Angular momentum
B
Stress
C
Strain
D
Work

Question 145Single Answer

The symbol of SI unit of inductance is H. It stands for

A
Holm
B
Halogen
C
Henry
D
Hertz

Question 146Single Answer

Light year is a measure of

A
time
B
distance
C
total amount of light falling on the Earth in a year
D
average intensity of light falling on the Earth in a year

Question 147Single Answer

Which one of the following is not a dimension less quantity ?

A
Strain
B
Relative density
C
Frequency
D
Angle

Question 148Single Answer

The dimensions of universal gas constant are

A
[L² M¹ T^–2 K^–1]
B
[L¹ M² T^–2 K^–1]
C
[L¹ M¹ T^–2 K^–1]
D
[L² M² T^–2 K^–1]

Question 149Single Answer

The dimensions of magnetic moment are

A
[L²A¹]
B
[L²A^–1]
C
[L²/A³]
D
[LA²]

Question 150Single Answer

The dimensions of Wien's constant are

A
[ML⁰TK]
B
[M⁰LT⁰K]
C
[M⁰L⁰TK]
D
[MLTK]

Question 151Single Answer

The dimensional formula of wave number is

A
[M⁰L⁰T^–1]
B
[M⁰L^–1T⁰]
C
[M^–1 L^–1 T⁰]
D
[M⁰ L⁰ T⁰]

Question 152Single Answer

The dimensional of Hubble ‘s wave number is

A
[T^–1]
B
[M⁰L⁰T^–2]
C
[MLT⁴]
D
[MT^–1]

Question 153Single Answer

The dimensions of solar constant is

A
[M⁰L⁰T⁰]
B
[MLT^–2]
C
[ML²T^–2]
D
MT^–3

Question 154Single Answer

The dimensional formula for entropy is

A
[MLT^–2K¹]
B
[ML² T^-2]
C
[ML²T^–2K^–1]
D
[ML²T^–2K]

Question 155Single Answer

Dimension of specific heat are

A
[ML² T^–2 K]
B
[ML² T^–2 K^–1]
C
[ML²T²K^–1]
D
[L²T^–2K^–2]

Question 156Single Answer

The physical quantity which has the dimensional formula [M¹T^–3] is

A
surface tension
B
solar constant
C
density
D
compressibility

Question 157Single Answer

Which one of the following elements is used as a timekeeper in atomic clocks ?

A
Potassium
B
Caesium
C
Calcium
D
Magnesium

Question 158Single Answer

Which one of the following is the value of one nanometer ?

A
10^–7 cm
B
10^–6 cm
C
10^–4 cm
D
10^–3 cm

Question 159Single Answer

What is the unit of pressure ?

A
Newton/sq. meter
B
Newton–meter
C
Newton
D
Newton/meter

Question 160Single Answer

The unit of pressure is

A
kg/cm²
B
kg/cm
C
kg/mm
D
kg/cm³

Question 161Single Answer

A stopwatch records 10 oscillations in 80 s. What is the period of one oscillation?

A
20 s
B
2 s
C
8 s
D
10 s

Question 162Single Answer

If its SI base-unit expression uses kg m² s⁻2, what is its time exponent?

A
2 (exponent)
B
-3 (exponent)
C
-2 (exponent)
D
3 (exponent)

Question 163Single Answer

A measured mass is 10 g with uncertainty ±0.1 g. What is the fractional uncertainty?

A
0.0075
B
0.01
C
0.005
D
0.02

Question 164Single Answer

A length is 20 m with absolute uncertainty 0.04 m. What is its percentage uncertainty?

A
0.3 %
B
0.8 %
C
0.5 %
D
0.2 %

Question 165Single Answer

A scale has 10 equal divisions over 1 cm. What is the value of one division?

A
0.15 cm
B
0.04 cm
C
0.075 cm
D
0.1 cm

Question 166Single Answer

If its SI base-unit expression uses kg m² s⁻4, what is its time exponent?

A
0 (exponent)
B
-4 (exponent)
C
1 (exponent)
D
-3 (exponent)

Question 167Single Answer

A stopwatch records 50 oscillations in 40 s. What is the period of one oscillation?

A
2.4 s
B
0.8 s
C
0.6 s
D
3.2 s

Question 168Single Answer

A measurement has 5 significant figures and is multiplied by an exact factor. How many significant figures should its reported result have?

A
2 significant figures
B
7 significant figures
C
5 significant figures
D
8 significant figures

Question 169Single Answer

A scale has 50 equal divisions over 2 cm. What is the value of one division?

A
0.04 cm
B
0.06 cm
C
0.1 cm
D
0.12 cm

Question 170Single Answer

A measurement has 4 significant figures and is multiplied by an exact factor. How many significant figures should its reported result have?

A
8 significant figures
B
9 significant figures
C
4 significant figures
D
3 significant figures

Question 171Single Answer

A measured mass is 40 g with uncertainty ±0.1 g. What is the fractional uncertainty?

A
0.0025
B
0.001
C
0.003125
D
0.000625

Question 172Single Answer

A measured mass is 50 g with uncertainty ±0.2 g. What is the fractional uncertainty?

A
0.01
B
0.001
C
0.002
D
0.004

Question 173Single Answer

The measured lengths of a rectangle are 12 cm and 2 cm. What is its area?

A
28.8 cm²
B
12 cm²
C
24 cm²
D
48 cm²

Question 174Single Answer

The measured lengths of a rectangle are 5 cm and 7 cm. What is its area?

A
42 cm²
B
140 cm²
C
105 cm²
D
35 cm²

Question 175Single Answer

A stopwatch records 50 oscillations in 50 s. What is the period of one oscillation?

A
4 s
B
0.4 s
C
1 s
D
3 s

Question 176Single Answer

If its SI base-unit expression uses kg m² s⁻3, what is its time exponent?

A
2 (exponent)
B
-2 (exponent)
C
-3 (exponent)
D
-1 (exponent)

Question 177Single Answer

A measured mass is 20 g with uncertainty ±0.2 g. What is the fractional uncertainty?

A
0.03
B
0.04
C
0.01
D
0.008

Question 178Single Answer

A measurement has 3 significant figures and is multiplied by an exact factor. How many significant figures should its reported result have?

A
7 significant figures
B
3 significant figures
C
5 significant figures
D
6 significant figures

Question 179Single Answer

A measured mass is 20 g with uncertainty ±0.5 g. What is the fractional uncertainty?

A
0.025
B
0.1
C
0.0125
D
0.0375

Question 180Single Answer

A stopwatch records 10 oscillations in 40 s. What is the period of one oscillation?

A
3.2 s
B
4 s
C
8 s
D
3 s

Question 181Single Answer

A cube has edge 8 cm. What is its volume?

A
128 cm³
B
409.6 cm³
C
512 cm³
D
1024 cm³

Question 182Single Answer

The measured lengths of a rectangle are 6 cm and 3 cm. What is its area?

A
18 cm²
B
27 cm²
C
13.5 cm²
D
54 cm²

Question 183Single Answer

A length is 4 m with absolute uncertainty 0.02 m. What is its percentage uncertainty?

A
0.625 %
B
0.5 %
C
1.5 %
D
0.375 %

Question 184Single Answer

A cube has edge 2 cm. What is its volume?

A
12 cm³
B
8 cm³
C
4 cm³
D
6.4 cm³

Question 185Single Answer

The measured lengths of a rectangle are 12 cm and 5 cm. What is its area?

A
45 cm²
B
30 cm²
C
60 cm²
D
90 cm²

Question 186Single Answer

A stopwatch records 25 oscillations in 20 s. What is the period of one oscillation?

A
2.4 s
B
2 s
C
0.8 s
D
3.2 s

Question 187Single Answer

A scale has 10 equal divisions over 2 cm. What is the value of one division?

A
0.25 cm
B
0.2 cm
C
0.24 cm
D
0.4 cm

Question 188Single Answer

The measured lengths of a rectangle are 3 cm and 5 cm. What is its area?

A
22.5 cm²
B
15 cm²
C
30 cm²
D
7.5 cm²

Question 189Single Answer

The measured lengths of a rectangle are 12 cm and 9 cm. What is its area?

A
162 cm²
B
108 cm²
C
54 cm²
D
324 cm²

Question 190Single Answer

A length is 5 m with absolute uncertainty 0.02 m. What is its percentage uncertainty?

A
0.32 %
B
0.4 %
C
1 %
D
0.48 %

Question 191Single Answer

A length is 10 m with absolute uncertainty 0.02 m. What is its percentage uncertainty?

A
0.08 %
B
0.2 %
C
0.15 %
D
0.1 %

Question 192Single Answer

A length is 4 m with absolute uncertainty 0.05 m. What is its percentage uncertainty?

A
1.875 %
B
1.25 %
C
3.75 %
D
5 %

Question 193Single Answer

The measured lengths of a rectangle are 8 cm and 11 cm. What is its area?

A
88 cm²
B
105.6 cm²
C
176 cm²
D
70.4 cm²

Question 194Single Answer

A length is 8 m with absolute uncertainty 0.05 m. What is its percentage uncertainty?

A
0.9375 %
B
0.15625 %
C
1.875 %
D
0.625 %

Question 195Single Answer

The measured lengths of a rectangle are 8 cm and 2 cm. What is its area?

A
12.8 cm²
B
40 cm²
C
24 cm²
D
16 cm²

Question 196Single Answer

A measured mass is 100 g with uncertainty ±1 g. What is the fractional uncertainty?

A
0.025
B
0.008
C
0.0075
D
0.01

Question 197Single Answer

The measured lengths of a rectangle are 12 cm and 7 cm. What is its area?

A
336 cm²
B
84 cm²
C
21 cm²
D
168 cm²

Question 198Single Answer

A cube has edge 4 cm. What is its volume?

A
96 cm³
B
256 cm³
C
64 cm³
D
80 cm³

Question 199Single Answer

A measured mass is 40 g with uncertainty ±1 g. What is the fractional uncertainty?

A
0.01875
B
0.025
C
0.0375
D
0.02

Question 200Single Answer

A length is 8 m with absolute uncertainty 0.01 m. What is its percentage uncertainty?

A
0.125 %
B
0.1 %
C
0.3125 %
D
0.375 %

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