ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

The tidal energy is due to gravitational pull of :

sun A
moon B
Mars C
None of these D

Question # 2

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

Zero J A
1 J B
0.1 J C
0.01 J D

Question # 3

Work-energy principle states that work done on the body by applied force is equal to change in:

Potential energy A
Kinetic nergy B
Linear momentum C
None of these D

Question # 4

Work done in lower and bucket into the well is:

Zero A
Positive B
Negative C
None of these D

Question # 5

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

Direction A
Force applied B
Path followed by the body C
Power D

Question # 6

Work done by the force of friction is always

Positive A
Zero B
Negative C
Maximum D

Question # 7

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

Positive work A
Negative work B
Zero work C
Infinite work D

Question # 8

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:

60° A
90° B
30° C
0° D

Question # 9

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

Positive A
Negative B
Zero C
None of these D

Question # 10

Which force is not a conservative force:

Frictional force A
Gravitational force B
Electric force C
Elastic spring force D

Question # 11

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

Conservative filed A
Non-conservative field B
Electric field C
None of these D

Question # 12

Which force is not a conservative force?

Frictional force A
Gravitational force B
Electric force C
Elastic spring force D

Question # 13

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

Positive A
Negative B
Zero C
None of these D

Question # 14

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

Potential A
Chemical B
Mechanical C
sound and heat D

Question # 15

Work is a Quantity

Vector A
Scalar B
Non-physical C
None of these D

Question # 16

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:`

Minimum work A
Maximum work
B
Zero work C
Negative work D

Question # 17

Which one is conservative force

Electric force A
Frictional force B
Normal force C
Air resistance D

Question # 18

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

Frictional force A
Gravitational force B
Electric force C
Centripetal force D

Question # 19

Work is a always done on a body when

A force acts on it A
It moves through certain distance B
None of A or B is correct C
Both A and B are correct D

Question # 20

Work done is independent of path followed in _______

Gravitational field A
Magnetic field B
Electric field C
All of these D

Question # 21

Escape velocity from surface of Moon as compared to that from Earth surface is:

Greater A
Smaller B
Equal C
None of thes D

Question # 22

Watt x second is unit of:

Force A
Work B
Power C
None of these D

Question # 23

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:

Power A
Work B
Pressure C
None of these D

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 with the direction of motion will be:

60° A
90° B
30° C
0° D

Question # 25

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

Nuclear filed A
Conservative field B
Gravitational field C
Non-conservative field D

Question # 26

Work is always done on a body when:

A force acts on it A
It moves through certain distance B
None of A and B is correct C
Both A and B is correct D

Question # 27

The work performed on an object does not depend on:

Force applied A
Angle at which force is inclined to the displacement B
Initial velocity of the object C
Displacement D

Question # 28

When force and displacement are perpendicular to each other than work is equal to

Unity A
Infinity B
Zero C
-Fd D

Question # 29

Work has a dimension as that of:

Torque A
Angular momentum B
Linear momentum C
Power D

Question # 30

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

0.5 J A
2 J B
0.25 J C
1 J D

Sr.#	Question	Answer
1	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	A. 60° B. 90° C. 30° D. 0°
2	Work is 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 is correct
3	Work is a:	A. Scalar quantity B. Vector quantity C. Base quantity D. None of these
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	A field in which the work done in moving a body along closed path is zero is called	A. Nuclear Field B. Conservative field C. Gravitational field D. Non-conservative field
6	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
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	Power is a :	A. Vector quantity B. Base quantity C. Scalar quantity D. None of these
9	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
10	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

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