ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

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

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ECAT Pre General Science Physics Chapter 4 Work and Energy

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Question # 1

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

Question # 2

Tick the conservation force:

Question # 3

Which one is conservative force

Question # 4

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

Question # 5

When the body is moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 6

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

Question # 7

Work is product of:

Question # 8

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 # 9

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Question # 10

The work performed on an object does not depend on:

Question # 11

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

Question # 12

A solar cell is made from:

Question # 13

Which of the following is not a unit of power:

Question # 14

The tidal energy is produced due to rotation of Earth relative to:

Question # 15

Work is a always done on a body when

Question # 16

Work is a scalar product of

Question # 17

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

Question # 18

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 # 19

Work done by the force of friction is always

Question # 20

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 # 21

Work is always done on a body when:

Question # 22

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

The energy stored int he water of the dam is:

Question # 27

The tidal energy is due to gravitational pull of :

Question # 28

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

Question # 29

Work done is independent of path followed in _______

Question # 30

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 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
2 The field in which work done in moving a body between two points depends upon the path followed is called:
A. Conservative field
B. Non-conservative field
C. Electric field
D. None of these
3 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:
A. Power
B. Work
C. Pressure
D. None of these
4 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
5 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
6 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
7 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
8 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
9 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
10 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power

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