ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

Try The MCQ's Test For ECAT Physics Chapter 4 Work and Energy

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

Power is a :

Question # 2

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 3

When a wall is pushed by a person very strongly, he has done:

Question # 4

The space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 5

A field in which the work done in moving a body along closed path is zero is called

Question # 6

Which of the following type of force can do no work on the particle on which it acts:

Question # 7

Work is always done on a body when:

Question # 8

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 9

The work done in moving a body between two points in a conservation field is independent of the:

Question # 10

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 11

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 12

Work is a

Question # 13

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:

Question # 14

The ultimate source of money sources of energy is:

Question # 15

When a falling body hits ground, its KE changes to _____ energy.

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
2 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
3 A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:
A. +5 x 101J
B. +5 x 102J
C. +5 x 103J
D. +5 x 104J
4 Which of the following types of force can do no work on the particle on which it acts
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
5 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
6 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
7 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:
A. 2 J
B. 0.25 J
C. 1 J
D. 0.5 J
8 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
9 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct
10 A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°

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