ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

Work done by the force of friction is always

Positive A
Zero B
Negative C
Maximum D

Question # 2

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

+5 X 10¹J A
+5 X 10²J B
+5 X 10³J C
+5 X 10⁴J D

Question # 3

Power is a :

Vector quantity A
Base quantity B
Scalar quantity C
None of these D

Question # 4

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

0.5 Kwn A
2 Kwh B
1 Kwh C
None of these D

Question # 5

The unit of work in CGS system is

Joule A
Erg B
Dyne C
Watt D

Question # 6

The power of an electric generating station is expressed in:

Kilo Jule A
Kilowatt-hour B
Kilo watt C
Watt D

Question # 7

Work has the dimensions as that of

Torque A
Angular momentum B
Linear momentum C
Power 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

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

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

Question # 10

A solar cell is made from:

Iron A
Silicon B
Germanium C
Copper D

Question # 11

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

0° A
90° B
180° C
None of these D

Question # 12

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

0° A
90° B
180° C
None of these D

Question # 13

Maximum work is done when force and displacement are

Parallel A
Antiparallel B
Perpendicular C
Both a and b D

Question # 14

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Zero A
10.2 J B
100 J C
980 J D

Question # 15

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Much more A
Very small B
No amount at all C
None of these D

Question # 16

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:

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

Question # 17

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:

0° A
30° B
60° C
90° D

Question # 18

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

Unity A
Infinity B
Zero C
-Fd D

Question # 19

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 # 20

Teh consumption of energy by a 1000 watt heater in half an hour is:

5 Kwh A
0.5 Kwh B
2.5 Kwh C
3.2 Kwh D

Question # 21

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

1 dyne A
1 joule B
1KJ C
1 Watt D

Question # 22

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

11 m/sec A
11 km/sec B
11 km/hour C
11 cm/sec D

Question # 23

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

Increases A
Decreases B
Remains same C
None of these D

Question # 24

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 # 25

1 J = ________?

10⁷erges A
10^-7erges B
10⁵erges C
10^-5erges D

Question # 26

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 # 27

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

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

Question # 28

Which force is not a conservative force:

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

Question # 29

The ultimate source of money sources of energy is:

Sun A
Air B
Water C
Petroleum D

Question # 30

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

Sr.#	Question	Answer
1	Work is a	A. Scalar quantity B. Vector quantity C. Base quantity D. None of these
2	Work is a:	A. Scalar quantity B. Vector quantity C. Base quantity D. None of these
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	The dimensions of work	A. [MLT^-1] B. [MLT^-2] C. [ML²T^-2] D. [MLT]
5	The tidal energy is due to gravitational pull of :	A. sun B. moon C. Mars D. None of these
6	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
7	Escape velocity from surface of Moon as compared to that from Earth surface is:	A. Greater B. Smaller C. Equal D. None of thes
8	The ultimate source of money sources of energy is:	A. Sun B. Air C. Water D. Petroleum
9	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:`	A. Minimum work B. Maximum work C. Zero work D. Negative work
10	Work done is independent of path followed in _______	A. Gravitational field B. Magnetic field C. Electric field D. All of these

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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

ECAT Pre General Science Physics Chapter 4 Work and Energy

Work done by the force of friction is always

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

Power is a :

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

The unit of work in CGS system is

The power of an electric generating station is expressed in:

Work has the dimensions as that of

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:

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

A solar cell is made from:

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

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

Maximum work is done when force and displacement are

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

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:

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:

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

Work is always done on a body when:

Teh consumption of energy by a 1000 watt heater in half an hour is:

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

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

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

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

1 J = ________?

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

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

Which force is not a conservative force:

The ultimate source of money sources of energy is:

The work performed on an object does not depend on

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