Which of the following has the same dimensional formula as energy?
A
Work
B
Pressure
C
All of the above
D
Stress
Question 5Single Answer
00250 is?
A
2
B
3
C
5
D
4
Question 6Single Answer
The dimensional formula of Planck’s constant is?
A
[M⁰L²T⁻¹]
B
[ML²T⁻²]
C
[ML²T⁻¹]
D
[MLT⁻¹]
Question 7Single Answer
Which of the following is a derived unit?
A
Kilogram
B
Metre
C
Newton
D
Second
Question 8Single Answer
The error in measurement is classified as?
A
Systematic and random
B
Only systematic
C
Only random
D
Only absolute
Question 9Single Answer
Relative velocity of two objects moving in the same direction is?
A
Product of their velocities
B
Sum of their velocities
C
Difference of their velocities
D
Division of their velocities
Question 10Single Answer
In projectile motion, the horizontal component of velocity is?
A
Decreasing
B
Increasing
C
Constant
D
Zero
Question 11Single Answer
The path of a projectile is?
A
Straight line
B
Parabolic
C
Circular
D
Elliptical
Question 12Single Answer
At the highest point of projectile motion, the vertical component of velocity is?
A
Maximum
B
Zero
C
Equal to horizontal component
D
Double the initial velocity
Question 13Single Answer
The time of flight of a projectile is given by?
A
(u² sin²θ)/g
B
(u sinθ)/g
C
(u cosθ)/g
D
(2u sinθ)/g
Question 14Single Answer
The range of a projectile is maximum when angle of projection is?
A
30°
B
45°
C
60°
D
90°
Question 15Single Answer
Uniform circular motion is an example of?
A
Accelerated motion
B
Uniform motion
C
Non-accelerated motion
D
Linear motion
Question 16Single Answer
Centripetal acceleration is directed?
A
Away from the centre
B
Towards the centre
C
Along the tangent
D
Opposite to velocity
Question 17Single Answer
The dimensional formula of speed is?
A
[ML²T⁻²]
B
[MLT⁻¹]
C
[M⁰LT⁰]
D
[LT⁻¹]
Question 18Single Answer
Which of the following is a vector quantity?
A
Time
B
Speed
C
Distance
D
Velocity
Question 19Single Answer
The accuracy of a measurement depends on?
A
Weight of the instrument
B
Size of the instrument
C
Colour of the instrument
D
Least count of the instrument
Question 20Single Answer
002300 are?
A
5
B
2
C
3
D
4
Question 21Single Answer
The relative velocity of two objects moving towards each other is?
A
Zero
B
Difference of their velocities
C
Product of their velocities
D
Sum of their velocities
Question 22Single Answer
In projectile motion, the horizontal range is given by?
A
(u cosθ)/g
B
(u sinθ)/g
C
(2u sinθ)/g
D
(u² sin2θ)/g
Question 23Single Answer
The centripetal force is provided by?
A
Force away from the centre
B
External force towards the centre
C
Tangential force
D
No force is required
Question 24Single Answer
Dimensional analysis is used to?
A
Find exact value
B
Check the correctness of equations
C
Measure length only
D
Measure time only
Question 25Single Answer
The SI unit of acceleration is?
A
kg m/s
B
m/s
C
m/s²
D
N
Question 26Single Answer
Which of the following has zero dimension?
A
Time
B
Length
C
Mass
D
Angle
Question 27Single Answer
The error in sum of two quantities is?
A
Sum of absolute errors
B
Difference of absolute errors
C
Product of absolute errors
D
Division of absolute errors
Question 28Single Answer
In uniform circular motion, the speed is?
A
Constant but velocity changes
B
Variable
C
Zero
D
Increasing
Question 29Single Answer
The maximum height of a projectile is given by?
A
(u cosθ)/g
B
(u² sin2θ)/g
C
(2u sinθ)/g
D
(u² sin²θ)/(2g)
Question 30Single Answer
The physical quantity which has both magnitude and direction is?
A
None
B
Scalar
C
Tensor
D
Vector
Question 31Single Answer
Which of the following is a scalar quantity?
A
Force
B
Velocity
C
Acceleration
D
Speed
Question 32Single Answer
The dimensional formula of work is?
A
[ML²T⁻²]
B
[MLT⁻²]
C
[M⁰LT⁻¹]
D
[MLT]
Question 33Single Answer
Relative velocity is used to calculate?
A
Speed only
B
Absolute velocity only
C
Velocity of one body with respect to another
D
Distance only
Question 34Single Answer
In projectile motion, the acceleration in horizontal direction is?
A
g
B
Zero
C
–g
D
Variable
Question 35Single Answer
The unit of angular velocity is?
A
m/s²
B
m/s
C
rad/s²
D
rad/s
Question 36Single Answer
500 are?
A
4
B
1
C
2
D
3
Question 37Single Answer
The error due to faulty instrument is?
A
Systematic error
B
Random error
C
Gross error
D
Personal error
Question 38Single Answer
For two bodies moving in opposite directions, relative velocity is?
A
Sum of their velocities
B
Difference of their velocities
C
Product
D
Zero
Question 39Single Answer
The trajectory of a projectile is?
A
Hyperbola
B
Straight line
C
Circle
D
Parabola
Question 40Single Answer
The centripetal acceleration in uniform circular motion is?
A
vr
B
v/r
C
v²/r
D
r/v
Question 41Single Answer
Dimensional analysis cannot be used to?
A
Check dimensional correctness
B
Derive the exact formula
C
Convert units
D
Find dimensions
Question 42Single Answer
The SI unit of momentum is?
A
kg m/s²
B
kg m/s
C
N
D
J
Question 43Single Answer
Which of the following is a dimensionless quantity?
A
Pressure
B
Stress
C
Force
D
Strain
Question 44Single Answer
The maximum range of a projectile is?
A
u²/2g
B
u²/g
C
2u²/g
D
u² sin2θ/g
Question 45Single Answer
In uniform circular motion, the work done by centripetal force is?
A
Zero
B
Positive
C
Negative
D
Variable
Question 46Single Answer
230 × 10⁴ is?
A
2
B
3
C
4
D
5
Question 47Single Answer
Random error can be reduced by?
A
Using better instrument
B
Taking average of many observations
C
Calibrating instrument
D
Changing unit
Question 48Single Answer
The relative velocity of a body with respect to itself is?
A
Double its speed
B
Equal to its speed
C
Zero
D
Infinite
Question 49Single Answer
The dimensional formula of pressure is?
A
[ML²T⁻²]
B
[MLT⁻²]
C
[ML⁻¹T⁻²]
D
[M⁰LT⁻¹]
Question 50Single Answer
Which of the following is a vector quantity?
A
Displacement
B
Distance
C
Speed
D
Time
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Concerned Subject (Physics)
Question 51Single Answer
The SI unit of angular acceleration is?
A
m/s²
B
rad/s
C
rad/s²
D
N
Question 52Single Answer
005060 is?
A
5
B
3
C
4
D
2
Question 53Single Answer
Systematic error can be minimized by?
A
Taking average of readings
B
Calibrating the instrument
C
Changing the unit
D
Increasing the size of instrument
Question 54Single Answer
In projectile motion, the time to reach maximum height is?
A
(2u sinθ)/g
B
(u sinθ)/g
C
(u cosθ)/g
D
(u² sin2θ)/g
Question 55Single Answer
For a projectile, the horizontal range is maximum when the angle of projection is?
A
90°
B
30°
C
60°
D
45°
Question 56Single Answer
The centripetal force required for circular motion is given by?
A
mr/v
B
mv/r
C
mvr
D
mv²/r
Question 57Single Answer
The dimensional formula of angular velocity is?
A
[ML²T⁻²]
B
[LT⁻¹]
C
[MLT⁻¹]
D
[T⁻¹]
Question 58Single Answer
The relative velocity of two bodies moving in perpendicular directions is?
A
√(v₁² + v₂
²)
B
v₁ + v₂
C
v₁ - v₂
D
v₁ × v₂
Question 59Single Answer
In uniform circular motion, the work done by the centripetal force in one revolution is?
A
Negative
B
Positive
C
Zero
D
Equal to kinetic energy
Question 60Single Answer
The error in the product of two quantities is?
A
Sum of relative errors
B
Difference of relative errors
C
Product of absolute errors
D
Sum of absolute errors
Question 61Single Answer
The angle of projection for which range is equal to maximum height is?
A
60°
B
45°
C
30°
D
tan⁻¹(4)
Question 62Single Answer
The dimensional formula of torque is?
A
[M⁰LT⁻¹]
B
[MLT⁻²]
C
[ML²T⁻²]
D
[MLT]
Question 63Single Answer
Which of the following is not a vector?
A
Velocity
B
Momentum
C
Energy
D
Acceleration
Question 64Single Answer
00 × 10³ is?
A
2
B
1
C
4
D
3
Question 65Single Answer
Random errors are reduced by?
A
Calibrating the instrument
B
Using a more accurate instrument
C
Taking the mean of a large number of observations
D
Changing the unit system
Question 66Single Answer
In projectile motion, the velocity at the highest point is?
A
u sinθ
B
u cosθ (horizontal only)
C
u
D
Zero
Question 67Single Answer
The centripetal force acts?
A
At 45° to velocity
B
Along the velocity
C
Opposite to velocity
D
Perpendicular to the velocity
Question 68Single Answer
The dimensional formula of power is?
A
[MLT⁻²]
B
[ML²T⁻³]
C
[ML²T⁻²]
D
[M⁰LT⁻¹]
Question 69Single Answer
Which quantity has the dimensional formula [M⁰L⁰T⁰]?
A
Force
B
Velocity
C
Angle
D
Energy
Question 70Single Answer
The relative velocity when two bodies are moving in the same direction with velocities v1 and v2 is?
A
v1 + v2
B
v1 – v2
C
v1 × v2
D
v1 / v2
Question 71Single Answer
For a projectile, the maximum height H and range R are related when θ = 45° as?
A
H = 2R
B
H = R
C
H = R/4
D
H = R/2
Question 72Single Answer
The work done by centripetal force in uniform circular motion is?
A
Positive
B
Zero
C
Negative
D
Equal to mv²/r
Question 73Single Answer
Gross error is due to?
A
Random fluctuations
B
Faulty instrument
C
Environmental factors
D
Carelessness of the observer
Question 74Single Answer
In projectile motion launched from ground, the time to reach maximum height and total time of flight are related as?
A
Time of flight = time to max height
B
Time of flight = 2 × time to max height
C
Time of flight = 4 × time to max height
D
No relation
Question 75Single Answer
The unit of angular momentum is?
A
N m
B
kg m/s
C
kg m²/s
D
J
Question 76Single Answer
The mirror formula is?
A
v + u = f
B
1/v – 1/u = 1/f
C
1/v + 1/u = 1/f
D
v – u = f
Question 77Single Answer
For a concave mirror, focal length f is?
A
Zero
B
Positive
C
Negative
D
Infinite
Question 78Single Answer
The magnification m for a mirror is?
A
m = –v/u
B
m = v/u
C
m = f/u
D
m = 0
Question 79Single Answer
Total Internal Reflection (TIR) occurs when?
A
Light travels from denser to rarer medium and angle of incidence > critical angle
B
From rarer to denser
C
Angle of incidence < critical angle
D
No reflection
Question 80Single Answer
Critical angle for water-air interface is approximately?
A
42°
B
48.6°
C
90°
D
0°
Question 81Single Answer
Refraction through a spherical surface follows?
A
μ₂/v – μ₁/u = (μ₂ – μ₁)/R
B
1/v + 1/u = 1/f
C
No formula
D
Only plane surface
Question 82Single Answer
The thin lens formula is?
A
v + u = f
B
1/v + 1/u = 1/f
C
1/v – 1/u = 1/f
D
No formula
Question 83Single Answer
Lens Maker’s formula for thin lens in air is?
A
1/f = (μ – 1) (1/R₁ – 1/R₂)
B
1/f = μ (1/R₁ – 1/R₂)
C
1/f = (μ – 1) (1/R₁ + 1/R₂)
D
1/f = 0
Question 84Single Answer
For a convex lens, focal length is?
A
Zero
B
Negative
C
Positive
D
Infinite
Question 85Single Answer
Power of a lens is?
A
No power
B
f
C
1/f in cm
D
1/f (in metre) in dioptre
Question 86Single Answer
Dispersion of light in prism occurs because?
A
Same speed
B
Different colours have different speeds in glass
C
No dispersion
D
Reflection only
Question 87Single Answer
Scattering of light is responsible for?
A
Blue colour of sky
B
Both
C
Red colour of sunset
D
No scattering
Question 88Single Answer
Compound microscope has?
A
Two convex lenses (objective and eyepiece)
B
One lens
C
Concave lenses
D
No lenses
Question 89Single Answer
Magnifying power of simple microscope is?
A
1
B
D/f
C
f/D
D
1 + D/f
Question 90Single Answer
Astronomical telescope has?
A
Concave objective
B
Both same focal length
C
Objective with large focal length and eyepiece with small focal length
D
No telescope
Question 91Single Answer
Resolving power of a telescope depends on?
A
Diameter of objective
B
Focal length only
C
Magnifying power only
D
No dependence
Question 92Single Answer
For a plane mirror, image is?
A
Virtual, erect and same size
B
Real and inverted
C
Magnified
D
No image
Question 93Single Answer
For concave mirror, when object is at centre of curvature, image is?
A
Real, inverted and same size at centre
B
Virtual
C
Magnified
D
No image
Question 94Single Answer
Refraction at spherical surface separating two media follows?
A
Both for different cases
B
1/f = (μ – 1)(1/R₁ – 1/R₂)
C
μ₂/v – μ₁/u = (μ₂ – μ₁)/R
D
No formula
Question 95Single Answer
Lens Maker’s formula assumes?
A
Thin lens and small aperture
B
Thick lens
C
No assumption
D
Only plane
Question 96Single Answer
Dispersion in prism causes?
A
Splitting of white light into colours
B
No splitting
C
Only reflection
D
No light
Question 97Single Answer
Rayleigh scattering is proportional to?
A
λ
B
λ⁴
C
1/λ
D
1/λ⁴
Question 98Single Answer
In compound microscope, final image is?
A
No image
B
Real
C
Virtual and magnified
D
Inverted only
Question 99Single Answer
Magnifying power of compound microscope is?
A
1
B
Only m_o
C
Only m_e
D
m = m_o × m_e
Question 100Single Answer
In astronomical telescope, final image is?
A
Virtual only
B
Erect
C
No image
D
Inverted and at infinity for normal adjustment
Question 101Single Answer
Resolving power of microscope is?
A
Only magnification
B
Ability to distinguish close objects
C
No power
D
Wavelength only
Question 102Single Answer
For convex mirror, image is always?
A
Real and inverted
B
Virtual, erect and diminished
C
Magnified
D
No image
Question 103Single Answer
Sign convention for mirrors (Cartesian) has?
A
Object distance u negative
B
u positive
C
No sign
D
f positive for concave
Question 104Single Answer
Refraction through prism deviates light by angle δ where?
A
δ = A
B
δ = i + e – A
C
δ = 0
D
No deviation
Question 105Single Answer
Minimum deviation in prism occurs when?
A
i = 0
B
Angle of incidence = angle of emergence
C
e = 0
D
No minimum
Question 106Single Answer
Chromatic aberration in lenses is due to?
A
Only spherical
B
Same focus
C
No aberration
D
Different colours focused at different points
Question 107Single Answer
In simple microscope, magnifying power is maximum when?
A
Image at least distance of distinct vision
B
Image at infinity
C
No magnification
D
Small f
Question 108Single Answer
In astronomical telescope, magnifying power for normal adjustment is?
A
f_o / f_e
B
f_e / f_o
C
1
D
f_o f_e
Question 109Single Answer
Resolving power of telescope is proportional to?
A
No power
B
Focal length
C
Magnification
D
Diameter of objective
Question 110Single Answer
For concave mirror, when object is between F and C, image is?
A
Diminished
B
Virtual
C
Real, inverted and magnified
D
No image
Question 111Single Answer
The lens formula 1/v – 1/u = 1/f is valid for?
A
Thin lens
B
Thick lens
C
No lens
D
Mirror
Question 112Single Answer
Dispersion without deviation is obtained in?
A
Single prism
B
Direct vision spectroscope (combination of prisms)
C
No dispersion
D
Lens
Question 113Single Answer
Scattering of light is responsible for?
A
No scattering
B
Blue sky only
C
Reddening of sun at sunrise and sunset
D
Only dispersion
Question 114Single Answer
In compound microscope, objective has?
A
Same as eyepiece
B
Long focal length
C
No aperture
D
Short focal length and small aperture
Question 115Single Answer
Magnifying power of astronomical telescope for final image at infinity is?
A
– f_o / f_e
B
f_o / f_e
C
1
D
f_e / f_o
Question 116Single Answer
Resolving power increases with?
A
Decrease in wavelength and increase in aperture
B
Increase in wavelength
C
No aperture
D
No change
Question 117Single Answer
For convex mirror, focal length is?
A
Negative
B
Positive
C
Zero
D
Infinite
Question 118Single Answer
Refraction at spherical surface for plane surface (R = ∞) gives?
A
Reflection
B
1/v + 1/u = 1/f
C
No refraction
D
μ₂/v = μ₁/u
Question 119Single Answer
Lens Maker’s formula for lens in medium of refractive index μ_m is?
A
No change
B
1/f = (μ_l – 1) (1/R₁ – 1/R₂)
C
1/f = (μ_l / μ_m – 1) (1/R₁ – 1/R₂)
D
1/f = 0
Question 120Single Answer
Angular dispersion in prism is?
A
δ_v – δ_r
B
δ
C
No dispersion
D
Zero
Question 121Single Answer
Tyndall effect is?
A
Dispersion only
B
Scattering of light by colloidal particles
C
No scattering
D
Reflection
Question 122Single Answer
In compound microscope, total magnification is?
A
Only m_e
B
Only m_o
C
m_o × m_e
D
1
Question 123Single Answer
In Galilean telescope, the eyepiece is?
A
Plane
B
Convex lens
C
No eyepiece
D
Concave lens
Question 124Single Answer
Resolving power of microscope is?
A
Only magnification
B
D / 1.22 λ
C
No power
D
2 μ sinθ / λ
Question 125Single Answer
For concave mirror, when object is at infinity, image is?
A
No image
B
Virtual
C
At centre
D
At focus, real and inverted
Question 126Single Answer
Sign convention for lenses (new Cartesian) has?
A
f negative for convex
B
u positive
C
Object distance u negative
D
No sign
Question 127Single Answer
Deviation by thin prism is?
A
δ = 0
B
δ = A
C
δ = (μ – 1) A
D
No deviation
Question 128Single Answer
Rainbow is due to?
A
No rainbow
B
Only reflection
C
Scattering
D
Refraction, dispersion and total internal reflection in raindrops
Question 129Single Answer
In simple microscope, when image is at infinity, magnifying power is?
A
f/D
B
1 + D/f
C
1
D
D / f
Question 130Single Answer
In astronomical telescope, length of tube for normal adjustment is?
A
2 f_o
B
f_o – f_e
C
f_o + f_e
D
No length
Question 131Single Answer
Resolving power of telescope is?
A
2 μ sinθ / λ
B
D / 1.22 λ
C
No power
D
Only magnification
Question 132Single Answer
Refraction through a prism with small angle A gives deviation?
A
(μ – 1) A
B
A
C
0
D
No deviation
Question 133Single Answer
Scattering of shorter wavelengths is more, hence sky appears?
A
Blue
B
Red
C
White
D
Black
Question 134Single Answer
In compound microscope, objective forms?
A
Erect image
B
Virtual image
C
No image
D
Real inverted image inside focal length of eyepiece
Question 135Single Answer
Terrestrial telescope uses?
A
Erecting lens to make final image erect
B
Concave eyepiece
C
No erecting
D
Only objective
Question 136Single Answer
Resolving power increases with?
A
Larger focal length
B
Increase in wavelength
C
No change
D
Decrease in wavelength of light used
Question 137Single Answer
For concave mirror, when object is between pole and focus, image is?
A
Virtual, erect and magnified
B
Real, inverted
C
Diminished
D
No image
Question 138Single Answer
The lens formula is derived from?
A
Plane surface
B
Reflection only
C
No derivation
D
Refraction at two spherical surfaces
Question 139Single Answer
Angular dispersion in prism is maximum for?
A
Red light
B
Violet light
C
Yellow
D
No dispersion
Question 140Single Answer
Blue colour of sky is due to?
A
Scattering of shorter wavelengths more
B
Reflection
C
Refraction
D
No scattering
Question 141Single Answer
In compound microscope, eyepiece acts as?
A
Plane glass
B
Objective
C
No eyepiece
D
Simple magnifier
Question 142Single Answer
In astronomical telescope, magnifying power is negative because?
A
No magnification
B
Erect
C
Final image is inverted
D
Positive always
Question 143Single Answer
Limit of resolution of eye is approximately?
A
Infinite
B
1 degree
C
No limit
D
1 minute of arc
Question 144Single Answer
For convex mirror, when object is at infinity, image is?
A
At focus, virtual and diminished
B
Real
C
Magnified
D
No image
Question 145Single Answer
The power of a lens combination is?
A
P = P1 – P2
B
P = P1 + P2 for thin lenses in contact
C
No power
D
Only one lens
Question 146Single Answer
Deviation by thin prism is independent of?
C
Angle of incidence (for small
Question 147Single Answer
Red colour of sunset is due to?
A
Reflection
B
Blue scattering
C
No scattering
D
Scattering of longer wavelengths less, so red reaches us
Question 148Single Answer
In compound microscope, distance between objective and eyepiece is?
