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 along a closed path in a gravitational field is:

Question # 2

Work has the dimensions as that of

Question # 3

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

Question # 4

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 5

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 6

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

Question # 7

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

Question # 8

Work is a Quantity

Question # 9

Work done is lowering the bucket into the well is:

Question # 10

Energy stored in the spring of a watch is called

Question # 11

When force and displacement are perpendicular to each other than work is equal to

Question # 12

A solar cell is made from:

Question # 13

Work is always done on a body when:

Question # 14

The ultimate source of money sources of energy is:

Question # 15

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:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
2 The space around the earth within it exerts a force of attraction on other bodies of known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
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:
A. 0°
B. 30°
C. 60°
D. 90°
4 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these
5 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
6 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
7 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
8 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
9 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
10 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force

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