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

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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 # 7

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 # 8

Work done is independent of path followed in _______

Question # 9

The dimensions of work

Question # 10

Work is a always done on a body when

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 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
4 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
5 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
6 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
7 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
8 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°
9 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
10 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

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