Download AppGovt. JobsFree G.K. & Current AffairsScholarshipBlog
Free PracticeContact
📚 Exam by Category
▾
📰 FREE Current Affairs, GK & Quiz
📅 Upcoming Exams
🏦 Bank Exams 2026
🚆 Railway Exams
📍 State wise jobs
🎓 Teaching Exams
🏛 NTA UGC NET Exams
🔬 Medical Exams
⚙ Engineering Exams
📋 SSC Exams 2026
🛡 Police Exams
📚 State Wise General Knowledge
📰 States Current Affairs
🌾 ICAR AIEEA 2026
📝 SET Exams
🛠 Trade Apprentice Exams
⚕ Nursing Exams & Staff Nurse Vacancy
🛡 Defence Exams
🔧 ESE Exams 2026
🔬 CSIR UGC NET Exams
⚖ Law and Bare Acts
🔬 IIT JAM 2027
🚂 GATE 2027 Exams
💊 Pharmacy and Paramedicals Exams
🐾 Veterinary Sciences Exams
🏛 UPSC & State PSC Exams
⚖ Law and Judiciary Exam
🏢 Insurance Exams
Question Bank

OSSC Laboratory Assistant Exam (Physics) - English

Duration: 90 · Questions: 100 · Max Marks: 100 · Language: 3

View OSSC Laboratory Assistant 2026 Exam Page

Physics

1
Temperature can be expressed as derived quantity in terms of
  1. A.length and mass
  2. B.mass and time
  3. C.length, mass and time
  4. D.None of these
2
Electron volt is a unit of
  1. A.potential difference
  2. B.charge
  3. C.energy
  4. D.capacity
3
Dimensions of impulse are
  1. A.[MLT –1]
  2. B.[MLT²]
  3. C.[MT–2]
  4. D.[ML–1T–3]
4
Potential is measured in
  1. A.joule/coulomb
  2. B.watt/coulomb
  3. C.newton–second
  4. D.None of these
5
One Nanometer is equal to
  1. A.10–9m
  2. B.10–6m
  3. C.10–10m
  4. D.10–3m
6
Maxwell is the unit of
  1. A.magnetic susceptibility
  2. B.intensity of Magnetisation
  3. C.magnetic Flux
  4. D.magnetic Permeability
7
Which of the following is derived physical quantity ?
  1. A.Mass
  2. B.Velocity
  3. C.Length
  4. D.Time
8
What are the units of magnetic permeability ?
  1. A.Wb A–1 m–1
  2. B.Wb–1 Am
  3. C.Wb A m–1
  4. D.Wb A–1 m
9
The dimensions of pressure gradient are
  1. A.[ML–2 T–2]
  2. B.[ML–2 T–1]
  3. C.[ML–1 T–1]
  4. D.[ML–1 T–2]
10
The dimensions of Rydberg's constant are
  1. A.[M0L–1T]
  2. B.[MLT–1]
  3. C.[M0 L–1T0]
  4. D.[ML0 T2]
11
'Farad' is the unit of
  1. A.resistance
  2. B.conductance
  3. C.capacitance
  4. D.inductance
12
S.I. unit of surface tension is
  1. A.degree/cm
  2. B.N/m
  3. C.N/m²
  4. D.Nm
13
Which one of the following pairs does not have the same dimension ?
  1. A.Potential energy and Kinetic energy
  2. B.Density and specific gravity
  3. C.Focal length and height
  4. D.Gravitational force and frictional force
14
Which one of the following physical quantity has the same unit as that of pressure ?
  1. A.Angular momentum
  2. B.Stress
  3. C.Strain
  4. D.Work
15
The symbol of SI unit of inductance is H. It stands for
  1. A.Holm
  2. B.Halogen
  3. C.Henry
  4. D.Hertz
16
Light year is a measure of
  1. A.time
  2. B.distance
  3. C.total amount of light falling on the Earth in a year
  4. D.average intensity of light falling on the Earth in a year
17
Which one of the following is not a dimension less quantity ?
  1. A.Strain
  2. B.Relative density
  3. C.Frequency
  4. D.Angle
18
The dimensions of universal gas constant are
  1. A.[L² M¹ T–2 K–1]
  2. B.[L¹ M² T–2 K–1]
  3. C.[L¹ M¹ T–2 K–1]
  4. D.[L² M² T–2 K–1]
19
The dimensions of magnetic moment are
  1. A.[L²A¹]
  2. B.[L²A–1]
  3. C.[L²/A³]
  4. D.[LA²]
20
The dimensions of Wien's constant are
  1. A.[ML0TK]
  2. B.[M0LT0K]
  3. C.[M0L0TK]
  4. D.[MLTK]
21
The dimensional formula of wave number is
  1. A.[M0L0T–1]
  2. B.[M0L–1T0]
  3. C.[M–1 L–1 T0]
  4. D.[M0 L0 T0]
22
The dimensional of Hubble ‘s wave number is
  1. A.[T–1]
  2. B.[M0L0T–2]
  3. C.[MLT4]
  4. D.[MT–1]
23
The dimensions of solar constant is
  1. A.[M0L0T0]
  2. B.[MLT–2]
  3. C.[ML²T–2]
  4. D.MT–3
24
The dimensional formula for entropy is
  1. A.[MLT–2K¹]
  2. B.[ML2 T-2]
  3. C.[ML²T–2K–1]
  4. D.[ML²T–2K]
25
Dimension of specific heat are
  1. A.[ML² T–2 K]
  2. B.[ML² T–2 K–1]
  3. C.[ML²T²K–1]
  4. D.[L²T–2K–2]
26
The physical quantity which has the dimensional formula [M¹T–3] is
  1. A.surface tension
  2. B.solar constant
  3. C.density
  4. D.compressibility
27
Which one of the following elements is used as a timekeeper in atomic clocks ?
  1. A.Potassium
  2. B.Caesium
  3. C.Calcium
  4. D.Magnesium
28
Which one of the following is the value of one nanometer ?
  1. A.10–7 cm
  2. B.10–6 cm
  3. C.10–4 cm
  4. D.10–3 cm
29
What is the unit of pressure ?
  1. A.Newton/sq. meter
  2. B.Newton–meter
  3. C.Newton
  4. D.Newton/meter
30
The unit of pressure is
  1. A.kg/cm²
  2. B.kg/cm
  3. C.kg/mm
  4. D.kg/cm3
31
Which one of the following quantities doe not have unit ?
  1. A.Stress
  2. B.Force
  3. C.Strain
  4. D.Pressure
32
Dimensional formula for thermal conductivity is here K denotes the temperature:
  1. A.MLT–2K
  2. B.MLT–2K–2
  3. C.MLT–3K
  4. D.MLT–3K–1
33
Which of the following is the unit of molar gas constant ?
  1. A.JK–1 mol–1
  2. B.Joule
  3. C.JK–1
  4. D.J mol–1
34
Density of liquid is 16.8 g cm–3. Its value in the International System of Units is
  1. A.16.8 kgm–3
  2. B.168 kgm–3
  3. C.1680 kgm–3
  4. D.16800 kgm–3
35
The dimensional formula of couple is
  1. A.[ML² T–2]
  2. B.[MLT²]
  3. C.[ML–1T–3]
  4. D.[ML–2T–2]
36
Subtract 0.2 J from 7.26 J and express the result with correct number of significant figures.
  1. A.7.1 J
  2. B.7.06 J
  3. C.7.0 J
  4. D.7 J
37
Multiply 107.88 by 0610 and express the result with correct number of significant figures.
  1. A.65.8068
  2. B.65.807
  3. C.65.81
  4. D.65.8
38
When 97.52 is divided by 2.54, the correct result is
  1. A.38.3937
  2. B.38.394
  3. C.38.39
  4. D.38.4
39
Which of the following is the most accurate ?
  1. A.200.0m
  2. B.20 × 10¹ m
  3. C.2×10²m
  4. D.data is inadequate
40
The area of a square is 5.29 cm². The area of 7 such square taking into account the significant figures is:
  1. A.37cm²
  2. B.37.030 cm²
  3. C.37.03 cm²
  4. D.37.0 cm²
41
The SI unit of coeffient of mutual inductance of a coil is
  1. A.henry
  2. B.volt
  3. C.farad
  4. D.weber
42
The S.I. unit of pole strength is
  1. A.Am²
  2. B.Am
  3. C.Am–1
  4. D.Am–2
43
Which is dimensionless ?
  1. A.Force/acceleration
  2. B.Velocity/accerleration
  3. C.Volume/area
  4. D.Energy/work
44
The expression [ML–1T–2] does not represent
  1. A.pressure
  2. B.power
  3. C.Stress
  4. D.Young's modulus
45
The dimensional formul of current density is
  1. A.[M0L–2T–1Q]
  2. B.[M0L2T1Q–1]
  3. C.[MLT–1Q]
  4. D.[ML–2T–1Q²]
46
Match the List – I with List – II
List - I                  List - II
(Units)        (Physical quantity)
A. Watt                 1. Electric charge
B. Tesla               2. Power
C. Coulomb       3. Luminous intensity
D. Candela        4. Magnetic field
Select the correct answer from the codes given below :
  1. A.A B C D
    1 4  1  3
  2. B.1 2  3 4
  3. C.1 2  4  3
  4. D.2 4 3   1
47
Match the List – I with List – II
List - I                            List - II
(Physical quantity)    (Units)
A. Power                    1. kg ms–1
B. Energy                   2. kg m²s–1
C. Momentum          3. Nm–2
D. Pressure              4. kW
                                    5. kWh
Select the correct answer from the codes given below :
  1. A.A B C D
    4 5 1  3
  2. B.4 5 1 2
  3. C.5 4 1 2
  4. D.5 4 2 3
48
What is the correct sequence in which the lengths of the following units increase ?
(1) Angstrom
(2) Micron
(3) Nanometer
Select the correct answer from the codes given below :
  1. A.1, 2, 3
  2. B.3, 1, 2
  3. C.1, 3, 2
  4. D.2, 3, 1
49
Match the List – I with List – II
List - I                                   List - II
(Physical quantitiy)           (Units)
A. Density                         1. [MLT–2]
B. Force                            2. [ML–3]
C. Energy                         3. [MLT–1]
D. Momentum                 4. [ML2T–2]
Select the correct answer from the codes given below :
  1. A.A B C D
    3 2  4  1
  2. B.1 2 3 4
  3. C.2 1 4 3
  4. D.3 2 1 4
50
Match the List – I with List – II
List - I                              List - II
(Physical quanitity)      (Units)
A. Solid angle            1. pascal
B. Impulse                  2. Steradian
C. Viscosity                3. Newton–second
D. Pressure               4. Pascal–second
Select the correct answer from the codes given below :
  1. A.A B C D
    2 4  3 1
  2. B.2 3 4 1
  3. C.1 4 3 2
  4. D.1 3 4 2
51
Which of the following is most accurate ?
  1. A.A screw gauge of least count 0.001 mm
  2. B.A screw gauge having pitch 1 mm and 50 divisions on circular scale
  3. C.A vernier callipers of least count 0.01 mm
  4. D.Vernier callipers having 20 divisions on the sliding scale (vernier scale) coinciding 19 divisions on the main millimetre scale
52
Which of the following quantities has a unit but dimensionless ?
  1. A.Strain
  2. B.Reynolds number
  3. C.Angular displacemet
  4. D.Poisson's ratio
53
The displacement of a body at a particular second n is given by the expression  The dimensional formula of Snth in this equation is
  1. A.[M¹L0T¹]
  2. B.[M0L1T0]
  3. C.[M0L¹T–1]
  4. D.[M0L0T0]
54
The division of energy by time is X. The dimensional formula ofX is same as that of
  1. A.momentum
  2. B.power
  3. C.torque
  4. D.electric field
55
The dimensions of electromotive force in terms of correntA are
  1. A.[MT-2 A-2]
  2. B.[ML2T-2 A2]
  3. C.[ML2T-2 A -2]
  4. D.[ML2T3 A-1]
56
[MLT-1] + [MLT-1] = ………………
  1. A.[M0L0T0]
  2. B.[MLT-1]
  3. C.2[MLT-1]
  4. D.None of these
57
Which physical quantities have same dimensions ?
  1. A.Moment of couple and work
  2. B.Force and power
  3. C.Latent heat and specific heat
  4. D.Work in power
58
life is charge, V the potential difference, T the temperature, then the units of   are the same as that of
  1. A.planck’s constant
  2. B.stefan’s constant
  3. C.Boltzmann constant
  4. D.gravitational constant
59
in the eqn. (V - b) = constant, the unit of a is
  1. A.dyne × cm5
  2. B.dyne × cm4
  3. C.dyne × cm3
  4. D.dyne × cm2
60
The least count of an instrument is 0.01 cm. Which of the following reding denotes the one, measured by this instrument ?
  1. A.1.04 cm
  2. B.2.001 cm
  3. C.3.1 cm
  4. D.None of these
61
Match the List – I and List – II
        List – I                          List – II
A. Wavelength                  1. Herze
B. Energy                           2. Angstrom
C. Intensity of sound       3. Joule
D. Frequency                    4. Decibel
Select the correct answer from the codes given below :
  1. A.A  B C D     
    2  3  4  1
  2. B.1 2  3 4
  3. C.2 3 1  4
  4. D.2 1  3  4
62
Match the List – I and List – II
List – I                           List – II
A. Temperature            1. Kelvin
B.Power                        2. Watt
C.Pressure                  3. Pascal
D.Force                         4. Newton
Select the correct answer from the codes given below :
  1. A.A B C D     
    2 1  3 4
  2. B.1 2  4 3
  3. C.1 2  3 4
  4. D.2 1  4 3
63
Match the List – I and List – II
List – I                    List – II
Acceleration          1. Joule
Electric current      2. Newton second
Work done             3. Ampere
Impulse                  4. Metre per sec2
Select the correct answer from the codes given below :
  1. A.A B C D    
    1 2  3 4
  2. B.2 3 4 1
  3. C.4 3 1 2
  4. D.3 4 1 2
64
Which one of the following statements is correct ?
  1. A.The measurement of mass taken by a spring weighing balance is correct at the place where the spring balance is calibrated for
  2. B.The mesurment of mass taken by a spring weighing balance is correct at the all places
  3. C.The measurement of mass taken by a spring weighing balance is correct at the place where the acceleration due to gravity is same with the place where the spring balance is calibrated for
  4. D.A sping balance cannot be used to mesure mass at any place
65
Which one of the following statements is not correct ?
  1. A.The SI unit charge is ampere – second
  2. B.Debye is the unit of dipole moment
  3. C.Resistvity of a wire of length / and area of crosssection a depends upon both / and a
  4. D.The kinetic energy of an length of mass in kg and charge / coulomb when accelerated through a potential difference of V volt, is joule
66
If a body is moving at constant speed in a circular path, its
  1. A.velocity is constant and its acceleration is zero
  2. B.velocity and acceleration are both changing direction only
  3. C.velocity and accleration are both increaing
  4. D.velocity is constant and acceleration is changing direction
67
A graph is plotted showing the velocity of a car as a function of time. If the graph is a straight line, it means that
  1. A.the car started at rest
  2. B.acceleration was constant
  3. C.acceleration was increasing
  4. D.velocity was constant
68
If a car is traveling north on a straight road and its brakes are applied, it will
  1. A.have no acceleration
  2. B.accelerate to the south
  3. C.accelerate to the north
  4. D.accelerate either east or west
69
An object moves with a uniform velocity when
  1. A.the forces acting on the object are balanced
  2. B.there is no external force on it
  3. C.Both of (a) and (b)
  4. D.Either (a) or (b)
70
The acceleration of a car that speeds up from 12 meters per second to 30 meters per second in 15 seconds
  1. A.2.4 m/s²
  2. B.1.2 m/s²
  3. C.2 m/s²
  4. D.5.2 m/s²
71
A particle experiences constant acceleration for 20 seconds after starting from rest. If it travels a distances s1 in the first 10 seconds and distances s2 in the next 10 seconds, then
  1. A.s2 = s1
  2. B.s2 = 2s1
  3. C.s2 = 3s1
  4. D.s2 = 4s1
72
Motion of an object is the change in position with respect to a reference point known as
  1. A.Origin
  2. B.initial position
  3. C.final position
  4. D.distance
73
Displacement is the
  1. A.shortest distance between initial and final position
  2. B.the actual distance between initial and final positions
  3. C.the distance travelled by the object
  4. D.distance traveled by the object in a unit time
74
An object has traveled 10 km is 15 minutes, its displacement will be
  1. A.10 km
  2. B.Can be zero
  3. C.More than 10 km
  4. D.All of the Above
75
If an object covers equal distances in equal intervals of time, it is said to be in
  1. A.Circular Motion
  2. B.Uniform Motion
  3. C.Oscillatory Motion
  4. D.Non– uniform Motion
76
Average velocity of an object is obtained by.
  1. A.Dividing the total distance traveled b the total time taken
  2. B.Half of the sum of the initial velocity and the final velocity
  3. C.Both (a) and (b)
  4. D.None of the above
77
Negative value of acceleration signifies.
  1. A.The velocity is increasing
  2. B.The velocity is decreasing
  3. C.The velocity remains the same
  4. D.The object comes to rest
78
In distance–time graphs.
  1. A.Distance is taken along the X–axis
  2. B.Time is taken along the Y–axis
  3. C.Straight line indicates uniform motion
  4. D.Straight line indicates non–uniform motion
79
In velocity – time graphs.
  1. A.Velocity is taken along the Y–axis and Time is taken along the X–axis
  2. B.Straight line indicates uniform acceleration
  3. C.Straight line parallel to x–axis indicates uniform motion
  4. D.All of the above
80
The equation (s) of motion can be represented as.
  1. A.V = u + at
  2. C.2as = v² – u²
  3. D.All of these
81
A train travels 40 km at a uniform speed of 30 km h–1. Its average speed after traveling another 40 km is 45 km h–1 for the whole journey. Its speed in the second half of the journey is.
  1. A.45 km h–1
  2. B.90 km h–1
  3. C.60 km h–1
  4. D.None of these
82
A man walks on a straight road from his home to market 2.5km. away with a speed of 5 km/h. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/h. The average speed of the man over the interval of time 0 to 40 min. is equal to –
  1. A.5 km/h
  2. B.25/4 km/h
  3. C.30/4 km/h
  4. D.45/km/h
83
A ball is dropped from a window 24 meters high. How long will it take to reach the ground ?
  1. A.2.2 s
  2. B.1.2 s
  3. C.4.5 s
  4. D.0.2s
84
Mohan takes 20 minutes to cover a distance of 3.2 kilometers due north on a bicycle, his velocity in kilometer/hour-
  1. A.8.1
  2. B.9.6
  3. C.1.2
  4. D.7.2
85
A Pitcher throws his fastball horizontally at 42.1 meters per second. How far does it drop before crossing the plate, 18.3 meters away ?
  1. A.0.8 m
  2. B.1.2m
  3. C.2.2m
  4. D.0.93 m
86
Two balls A and B of same masses are thrown from the top of the building. A, thrown upward with velocity V and B, thrown downward with velocity V, then–
  1. A.Velocity of A is more than B at the ground
  2. B.Velocity of B is more than A at the ground
  3. C.Both A and B strike the ground with same velocity
  4. D.None of these
87
A ball is released from the top of a tower of height h meters. It takes T seconds to reach the ground. What is the position of the ball in T/3 seconds–
  1. A.h/9 meters from the ground
  2. B.7h/9 meters from the ground
  3. C.8h/9 meters from the ground
  4. D.17h/18 meters from the ground
88
When a bus suddenly takes a turn, the passengers are thrown outwards because of-
  1. A.inertia of motion
  2. B.acceleration of motion
  3. C.speed of motion
  4. D.Both (b) and (c)
89
A thief snatches a purse and runs due west, going 6.0 meter per second. A policeman, 15 meters to the east, sees the event and gives chase. If the officer is a good sprinter, going at 8.5 meters per second, how far does he have to run to catch the thief.
  1. A.12 m
  2. B.51 m
  3. C.61 m
  4. D.55 m
90
A car going at 24 meters per second passes a motorcycle at rest. As it passes, the motorcycle start up, accelerating at 3.2 meters per second squared. If the motorcycle can keep up that acceleration, how long will take for it to catch the car.
  1. A.12 s
  2. B.14s
  3. C.20s
  4. D.18s
91
The initial velocity of a body is 15 m/s. If it having an acceleration of 10 m/s², then the velocity of body after 10 seconds from start-
  1. A.110 m/s
  2. B.105 m/s
  3. C.120 m/s
  4. D.115 m/s
92
Which of the following can be zero, when a particle is in motion for some time ?
  1. A.Distance
  2. B.Displacement
  3. C.Speed
  4. D.None of these
93
The numerical ratio of average velocity to average speed is.
  1. A.always less than one
  2. B.always equal to one
  3. C.always more than one
  4. D.equal to or less than one
94
A passenger in a moving train tosses a coin. If the coin falls behind him, the train must be moving with.
  1. A.an acceleration
  2. B.a deceleration
  3. C.a uniform speed
  4. D.any of the above
95
A body is imparted motion from rest to move in a straigh line. If it is then obstructed, by an opposite force, then.
  1. A.the body may necessarily change direction
  2. B.the body is sure to slow down
  3. C.the body will necessarily continue to move in the same direction at the same speed
  4. D.None of these
96
Which of the following decreases in motion along a straight line with constant retardation while the body is moving away from the origin ?
  1. A.Speed
  2. B.Acceleration
  3. C.Displacement
  4. D.None of these
97
Which of the following is not an example of linear motion ?
  1. A.An aeroplane moving on a straight track with increasing speed
  2. B.A body in uniform circular motion
  3. C.Wheel rotating at uniform speed on road
  4. D.A body rolling down an inclines plane
98
Which of the following changes when a particle is moving with uniform velocity ?
  1. A.Speed
  2. B.Velocity
  3. C.Acceleration
  4. D.Position vector
99
Which one out of the following statement is false ?
  1. A.A body can have zero velocity and still be accelerated
  2. B.A body can have a constant velocity and still have a varying speed
  3. C.A body can have a constant speed and still have a varying velocity
  4. D.The direction of the velocity of a body can change when its acceleration is constant
100
What determines the nature of the path followed by the particle.
  1. A.speed
  2. B.velocity
  3. C.acceleration
  4. D.both (b) and (c)