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

Which force is not a conservative force:

Question # 2

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

Question # 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:

Question # 4

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 # 5

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

Question # 6

Work is a:

Question # 7

The work performed on an object does not depend on:

Question # 8

The power of an electric generating station is expressed in:

Question # 9

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

Question # 10

When a falling body hits ground, its KE changes to _____ energy.

Question # 11

Most of the geysers occur in:

Question # 12

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 # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Which of the following types of force can do no work on the particle on which it acts
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
2 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
3 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
4 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
5 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
6 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
7 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
8 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
9 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
10 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

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