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

When two protons are brought are brought closer potential energy of both of them:

Question # 2

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

Question # 3

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

Question # 4

The unit of work in CGS system is

Question # 5

Energy stored in the spring of a watch is called

Question # 6

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

Question # 7

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

Question # 8

Work is a scalar product of

Question # 9

The ultimate source of money sources of energy is:

Question # 10

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

Question # 11

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 # 12

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

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

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 15

Work is always done on a body when:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
2 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
3 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
4 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
5 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
6 If force and displacement are in opposite direction, the work done is taken as
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
7 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these
8 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
9 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
10 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt

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