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

Work done by the force of friction is always

Question # 2

Work has a dimension as that of:

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Work done along a closed path in a gravitational field is:

Question # 7

Work is a:

Question # 8

Work is a

Question # 9

Area under the force displacement graph gives

Question # 10

Maximum work is done when force and displacement are

Question # 11

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

Question # 12

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 # 13

The tidal energy is due to gravitational pull of :

Question # 14

If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:

Question # 15

The field in which work done in moving a body between two points depends upon the path followed is called:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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:
A. 60°
B. 90°
C. 30°
D. 0°
2 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
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 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. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
5 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero
6 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
7 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
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 or B is correct
D. Both A and B is correct
9 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
10 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes

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