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:

Question # 2

The work performed on an object does not depend on:

Question # 3

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 4

Most of the geysers occur in:

Question # 5

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

Question # 6

Work done is maximum when angle between force and displacement is:

Question # 7

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

Question # 8

Work done is maximum when angle between force and displacement is

Question # 9

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 10

A solar cell converts energy of the Sun into:

Question # 11

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 12

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

Question # 13

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 # 14

Work is a scalar product of

Question # 15

Work has the dimension as that of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is a always done on a body when
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B are correct
2 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
3 If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:
A. Power
B. Work
C. Pressure
D. None of these
4 When velocity of moving body is doubled, the quantity which is also doubled is its:
A. K.E.
B. Acceleration
C. Momentum
D. P.E.
5 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:
A. 60°
B. 90°
C. 30°
D. 0°
6 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B is correct
7 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
8 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
9 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
10 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power

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