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

Question # 2

Most of the geysers occur in:

Question # 3

Area under the force displacement graph gives

Question # 4

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

Question # 5

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

Question # 6

Work done by the force of friction is always

Question # 7

Work is product of:

Question # 8

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

Question # 9

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

Question # 10

Work is a scalar product of

Question # 11

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

Question # 12

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 # 13

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 with the direction of motion will be:

Question # 14

Work is a:

Question # 15

Work is a always done on a body when

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The consumption of energy by a 60 W bulb in 2 minutes is:
A. 2 watt-hour
B. 120 watt-hour
C. 30 watt-hour
D. None of these
2 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
3 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
A. 60°
B. 90°
C. 30°
D. 0°
4 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
5 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J
6 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
7 When a body 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
8 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
9 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
10 If force and displacement are in opposite direction, the work done is taken as
A. Positive work
B. Negative work
C. Zero work
D. Infinite work

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