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 is a Quantity

Question # 2

Work is a scalar product of

Question # 3

The unit of work in CGS system is

Question # 4

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

Question # 5

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

Question # 6

Work has a dimension as that of:

Question # 7

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

Question # 8

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

Question # 9

Work is a:

Question # 10

The commercial unit of electrical energy is :

Question # 11

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 12

Work done is maximum when angle between force and displacement is

Question # 13

The energy stored int he water of the dam is:

Question # 14

Which force is not a conservative force?

Question # 15

Escape velocity from surface of Moon as compared to that from Earth surface is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
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 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
4 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
5 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
6 When the body is 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
7 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
8 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
9 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
10 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field

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