ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

The commercial unit of electrical energy is :

Question # 2

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

Question # 3

The space around the earth in which its gravitational force acts on a body is called

Question # 4

Work has the dimensions as that of

Question # 5

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

Question # 6

A solar cell converts energy of the Sun into:

Question # 7

If force and displacement are in opposite direction, the work done is taken as:

Question # 8

Work is always done on a body when:

Question # 9

Maximum work is done when force and displacement are

Question # 10

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

Question # 11

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

Question # 12

In the force applied to parallel to the direction of motion, then the work done is:

Question # 13

Area under the force displacement graph gives

Question # 14

Work is a:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
2 When two protons are brought are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
3 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinte work
4 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
5 The space around the earth within which it expects a force of attraction on other bodies is known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
6 Which force is not a conservative force:
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
7 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
8 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
9 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
10 In the force applied to parallel to the direction of motion, then the work done is:
A. Positive
B. Negative
C. Zero
D. None of these

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