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1500 Important Physics MCQ Question and Answer PDF

4000 Important General Science MCQ Question & Answer in PDF Download

1.The weight of a body acts through the centre of

  • AGravity
  • BMass
  • CBoth (a) and (b)
  • DBuoyancy 
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Correct Answer : (A)

Gravity
Explanation:

The weight of a body acts through the centre of Gravity.

2.A wheel-barrow is an example of

  • AClass III lever
  • BPully system
  • CClass I lever
  • DClass II lever
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Correct Answer : (D)

Class II lever
Explanation:

A wheel-barrow is an example of Class II lever.

3.The motion of a body around a circular path is an example of 

  • AUniform velocity, variable acceleration
  • BUniform speed, Uniform velocity
  • CUniform speed, variable velocity
  • DUniform speed, variable acceleration
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Correct Answer : (A)

Uniform velocity, variable acceleration
Explanation:

The motion of a body around a circular path is an example of Uniform velocity and variable acceleration.

4.Flywheel is an important part of a steam engine because it

  • AAccelerates the speed of the engine
  • BHelps the engine in keeping the speed Uniform
  • CDecreases the moment of inertia
  • DGives strength to the engine
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Correct Answer : (B)

Helps the engine in keeping the speed Uniform
Explanation:

5.The Relative humidity is expressed in

  • AGrams 
  • BKilograms
  • CPercentage
  • DRatio 
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Correct Answer : (C)

Percentage
Explanation:

6.The motion of the wheels of a bullock-cart while moving on the road is an example of

  • AOscillatory and rotatory motion
  • BOscillatory and translator  motion
  • CTranslator and rotatory motion
  • DTranslator motion only
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Correct Answer : (C)

Translator and rotatory motion
Explanation:

7.If both the mass and the velocity of a body is increased to twice of their magnitude, the kinetic energy will increase by

  • A2 times
  • B4 times
  • C8 times
  • D16 times
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Correct Answer : (B)

4 times
Explanation:

8.A system exhibiting S.H.M. must possess

  • AElasticity as well as inertia
  • BElasticity, inertia and an external force
  • CElasticity only
  • DInertia only
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Correct Answer : (A)

Elasticity as well as inertia
Explanation:

9.The moment of inertia of a body does not depend upon its

  • AAxis of rotation
  • BAngular velocity
  • CForm of mass
  • DDistribution of mass
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Correct Answer : (B)

Angular velocity
Explanation:

The moment of inertia of a body does not depend upon its Angular velocity.

10.To open a door easily, the handle should be fixed

  • ANear the hinges
  • BAway from mid-point opposite to hinges
  • CIn the middle
  • DNone of these
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Correct Answer : (D)

None of these
Explanation:

11.An object covers distance which is directly proportional to the square of the time. Its acceleration is

  • AIncreasing
  • BDecreasing
  • CZero
  • DConstant
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Correct Answer : (D)

Constant
Explanation:

12.Which of the following have the same unit?

  • AWork and power
  • BTorque and moment of inertia
  • CWork and torque
  • DTorque and angular momentum
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Correct Answer : (C)

Work and torque
Explanation:

13.In a particular system, the units of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. the unit of force in this system will be equivalent toIn a particular system, the units of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. the unit of force in this system will be equivalent to

  • A0.1 N
  • B1 N
  • C10 N
  • D100 N
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Correct Answer : (A)

0.1 N
Explanation:

14.Distance of stars are measured in

  • AGalactic unit
  • BStellar mile
  • CCosmic kilometre
  • DLight year
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Correct Answer : (D)

Light year
Explanation:

Distance of stars are measured in Light year.

15.A man standing at the top of a tower has two spheres A and B. he drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct?

  • ABoth the spheres will reach the ground simultaneously.
  • BA will reach the ground first
  • CB will reach the ground first.
  • DThe question is incomplete because the masses of the spheres are not given.
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Correct Answer : (A)

Both the spheres will reach the ground simultaneously.
Explanation:

16.If a body moves with a constant speed in a circle

  • ANo work is done on it
  • BNo force acts on it 
  • CNo acceleration is produced in it 
  • DIts velocity remains constant
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Correct Answer : (D)

Its velocity remains constant
Explanation:

If a body moves with a constant speed in a circle Its velocity remains constant.

17.Which of the following is a scalar quantity?

  • AVelocity
  • BForce
  • CAngular momentum
  • DElectrostatic potential
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Correct Answer : (D)

Electrostatic potential
Explanation:

18.Which of the following is not a vector quantity?

  • ASpeed 
  • BVelocity
  • CTorque
  • DDisplacement
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Correct Answer : (A)

Speed 
Explanation:

19.An object with a constant speed

  • AIs not accelerated
  • BMight be accelerated
  • CIs always accelerated
  • DAlso has a constant velocity
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Correct Answer : (A)

Is not accelerated
Explanation:

20.A person can jump higher on the moon's surface than on the earth because

  • AThe moon?s surface is rough
  • BThe acceleration due to gravity in moon is smaller than that on the earth
  • CThe moon is cooler than earth
  • DThe moon has no atmosphere 
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Correct Answer : (B)

The acceleration due to gravity in moon is smaller than that on the earth
Explanation:
4000 Important General Science MCQ Question & Answer in PDF Download

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