# Multiple Choice Questions (MCQ) with Answers on Physics – Set 1

Multiple Choice Questions (MCQ) with Answers on Physics – Set 1

HPSC, HCS Preliminary Examination – 2014

1-The dimensional formula for Planck’s constant and angular momentum are respectively

1. [ML2T-2] and [MLT-1]
2. [ML2T-1] and [ML2T-1]
3. [ML3T1] and [ML2T-2]
4. [MLT-1] and [MLT-2]

(Ans: b)

2-Which of the following implies the greatest precision?

1. 10.1
2. 10.10
3. 10.100
4. 10.1000

(Ans: d)

3-Which of the following is NOT one of the fundamental quantities in physics?

1. Time
2. Length
3. Weight
4. Mass

(Ans: c)

4-SI unit of the power of a lens is

1. Diopter
2. Horse power
3. Hertz
4. Watt

(Ans: a)

5-ln physics, a radian per second is a unit of

1. angular displacement
2. angular velocity
3. angular acceleration
4. angular momentum

(Ans: b)

6-Dimensions of coefficient of viscosity is

1. [M2L2T2]
2. [M2LT2]
3. [ML-1T-1]
4. [MLT2]

(Ans: c)

7-A body of mass ‘m’ moving with velocity ‘u’ collides with a stationary body of mass ‘2m’ and coalesce to form one body. The speed of the system after collision, is

1. 3u
2. u/3
3. 2u
4. u/4

(Ans: b)

8-For an object moving in uniform circular motion with constant speed. The direction of The instantaneous acceleration vector is

1. tangent to the path of motion
2. equal to zero

(Ans: d)

9-The acceleration due to gravity on the moon is 1.6 meters per Second Square. On the moon, the time period of a pendulum whose length is 6.4 meters will be

1. π seconds
2. 2π seconds
3. 4π seconds
4. 8π seconds

(Ans: c)

10-Bernoulli’s Principle is a statement of

1. energy conservation in dynamic fluids.
2. momentum conservation in dynamic fluids.
3. hydrostatic equilibrium
4. thermal equilibrium in fluids.

(Ans: a)

11-The velocity of a body depends on time as v=20 +0.1t2. The body is undergoing

1. uniform acceleration
2. uniform retardation
3. non-uniform acceleration
4. non-uniform retardation

(Ans: c)

12-ln any collision, the parameter which is conserved is

1. kinetic energy
2. angular momentum
3. linear momentum
4. potential energy

(Ans: c)

13-The work done by any friction force is:

1. always positive
2. always negative
3. always zero
4. either positive or negative depending upon the situation’

(Ans: b)

14-A person moves 3m towards East and then 4m towards North. The resultant displacement from the initial position to final position is

1. 7m
2. 5m
3. 4m
4. 1m

(Ans: b)

15-A student goes from his house to school on his bicycle. The distance traveled by him is given by the relation x: (4t+6t2+3), where distance x is in meters and time t is in seconds. The acceleration of his bicycle after 30 seconds is

1. 360m/s2
2. 120m/s2
3. 36m/s2
4. 12m/s2

(Ans: d)

16-Two physical quantities having the same dimensions are

1. Force and energy
2. Work and torque
3. Pressure and power
4. Impulse and momentum

(Ans: b)