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 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 # 2

The dimensions of work

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 types of mechanical energy is/are:

Question # 5

The field in which work done in moving a body between two points depends upon the path followed is called:

Question # 6

Which of the following is not a unit of power:

Question # 7

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

Question # 8

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 # 9

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

Question # 10

SI Unit of work is

Question # 11

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

Question # 12

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 # 13

The value of escape velocity of Earth planet comes out to be:

Question # 14

Work has a dimension as that of:

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 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
2 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
3 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
4 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
5 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
6 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
7 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
8 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
9 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these
10 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

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