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
- [ML2T-2] and [MLT-1]
- [ML2T-1] and [ML2T-1]
- [ML3T1] and [ML2T-2]
- [MLT-1] and [MLT-2]
(Ans: b)
2-Which of the following implies the greatest precision?
- 10.1
- 10.10
- 10.100
- 10.1000
(Ans: d)
3-Which of the following is NOT one of the fundamental quantities in physics?
- Time
- Length
- Weight
- Mass
(Ans: c)
4-SI unit of the power of a lens is
- Diopter
- Horse power
- Hertz
- Watt
(Ans: a)
5-ln physics, a radian per second is a unit of
- angular displacement
- angular velocity
- angular acceleration
- angular momentum
(Ans: b)
6-Dimensions of coefficient of viscosity is
- [M2L2T2]
- [M2LT2]
- [ML-1T-1]
- [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
- 3u
- u/3
- 2u
- u/4
(Ans: b)
8-For an object moving in uniform circular motion with constant speed. The direction of The instantaneous acceleration vector is
- tangent to the path of motion
- equal to zero
- directed radially outward
- directed radially, inward
(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
- π seconds
- 2π seconds
- 4π seconds
- 8π seconds
(Ans: c)
10-Bernoulli’s Principle is a statement of
- energy conservation in dynamic fluids.
- momentum conservation in dynamic fluids.
- hydrostatic equilibrium
- thermal equilibrium in fluids.
(Ans: a)
11-The velocity of a body depends on time as v=20 +0.1t2. The body is undergoing
- uniform acceleration
- uniform retardation
- non-uniform acceleration
- non-uniform retardation
(Ans: c)
12-ln any collision, the parameter which is conserved is
- kinetic energy
- angular momentum
- linear momentum
- potential energy
(Ans: c)
13-The work done by any friction force is:
- always positive
- always negative
- always zero
- 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
- 7m
- 5m
- 4m
- 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
- 360m/s2
- 120m/s2
- 36m/s2
- 12m/s2
(Ans: d)
16-Two physical quantities having the same dimensions are
- Force and energy
- Work and torque
- Pressure and power
- Impulse and momentum
(Ans: b)