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

SI Unit of work is

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

Which force is not a conservative force:

Question # 6

Watt x second is unit of:

Question # 7

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

Question # 8

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:

Question # 9

Work has the dimensions as that of

Question # 10

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 # 11

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

Question # 12

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

Question # 13

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 # 14

Work is a

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 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
2 In the force applied is parallel to the direction of motion, then work done is:
A. Maximum
B. Minimum
C. Zero
D. None of these
3 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
4 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
5 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
6 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinte work
7 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
8 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
9 A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
10 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these

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