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

If force and displacement are in opposite direction, the work done is taken as:

Question # 2

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 # 3

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 # 4

The energy stored int he water of the dam is:

Question # 5

Work has the dimension as that of:

Question # 6

The work performed on an object does not depend on:

Question # 7

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

Question # 8

Which of the following is not a unit of power:

Question # 9

Work done by the force of friction is always

Question # 10

Tick the conservation force:

Question # 11

When velocity of moving body is doubled, the quantity which is also doubled is its:

Question # 12

Work is a:

Question # 13

The tidal energy is due to gravitational pull of :

Question # 14

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 15

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:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
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 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
4 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
5 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
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 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
8 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct
9 A field in which the work done in moving a body along closed path is zero is called
A. Nuclear Field
B. Conservative field
C. Gravitational field
D. Non-conservative field
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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