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

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

Question # 2

SI Unit of work is

Question # 3

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

Question # 4

Work has the dimensions as that of

Question # 5

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

Question # 6

Watt x second is unit of:

Question # 7

Work done is maximum when angle between force and displacement is:

Question # 8

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 9

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 the direction of motion will be:

Question # 10

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 11

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

Question # 12

The commercial unit of electrical energy is :

Question # 13

Work done is maximum when angle between force and displacement is

Question # 14

Maximum work is done when force and displacement are

Question # 15

A solar cell is made from:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power
2 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
3 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
4 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
5 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
6 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an 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
7 The work done moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body `
D. Power
8 In the force applied is parallel to the direction of motion, then work done is:
A. Maximum
B. Minimum
C. Zero
D. None of these
9 When the body is moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
10 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these

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