ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

Try The 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

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

Question # 2

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

Question # 3

SI Unit of work is

Question # 4

The energy stored int he water of the dam is:

Question # 5

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 6

Work is a Quantity

Question # 7

The types of mechanical energy is/are:

Question # 8

Work done by the force of friction is always

Question # 9

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

Question # 10

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

Question # 11

Work is always done on a body when:

Question # 12

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

Question # 13

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 14

Work is a:

Question # 15

The space around the earth within which it expects a force of attraction on other bodies is known as:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero
2 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
3 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
4 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
5 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
6 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these
7 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
8 The space around the earth within it exerts a force of attraction on other bodies of known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
9 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
10 The field in which work done in moving a body between two points depends upon the path followed is called:
A. Conservative field
B. Non-conservative field
C. Electric field
D. None of these

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