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

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

Question # 2

Work has the dimensions as that of

Question # 3

Work is always done on a body when:

Question # 4

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

Question # 5

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

Question # 6

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 7

If one newton force acts on a body and displaces the body through 1m work done on body is

Question # 8

Work done by the force of friction is always

Question # 9

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

Question # 10

The unit of work in CGS system is

Question # 11

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 # 12

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

Question # 13

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

Question # 14

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 # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J
2 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
3 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
4 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
5 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°
6 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
7 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
8 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
9 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
10 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°

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