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

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

Question # 2

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 # 3

Work done by the force of friction is always

Question # 4

The work performed on an object does not depend on:

Question # 5

Work has a dimension as that of:

Question # 6

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

Question # 7

Work is always done on a body when:

Question # 8

Most of the geysers occur in:

Question # 9

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

Question # 10

The unit of work in CGS system is

Question # 11

SI Unit of work is

Question # 12

The tidal energy is due to gravitational pull of :

Question # 13

A solar cell is made from:

Question # 14

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

Question # 15

Work done in lower and bucket into the well is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
2 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.
3 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
4 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
5 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
6 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
7 The work done moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body `
D. Power
8 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
9 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
10 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd

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