ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 4 Work and Energy

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ECAT Pre General Science 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 commercial unit of electrical energy is :

Question # 3

The work done on the body will be zero if:

Question # 4

Work is product of:

Question # 5

Work done is lowering the bucket into the well is:

Question # 6

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

Question # 7

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

Question # 8

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 9

The work performed on an object does not depend on:

Question # 10

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

Question # 11

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 12

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

Question # 13

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

Question # 14

Area under the force displacement graph gives

Question # 15

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 16

Work done by the force of friction is always

Question # 17

Maximum work is done when force and displacement are

Question # 18

Energy stored in the spring of a watch is called

Question # 19

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 # 20

Work done on a body by gravity in lifting it up to certain height is

Question # 21

Which one is conservative force

Question # 22

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

Question # 23

The unit of work in CGS system is

Question # 24

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:

Question # 25

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 # 26

The space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 27

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

Question # 28

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 # 29

A solar cell converts energy of the Sun into:

Question # 30

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 with the direction of motion will be:

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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 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
3 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.
4 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
5 When two protons are brought are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
6 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
7 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field
8 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
9 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
10 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J

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