ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

Work done is maximum when angle between force and displacement is

0° A
90° B
180° C
None of these D

Question # 2

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 # 3

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 # 4

Which force is not a conservative force:

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

Question # 5

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 # 6

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 # 7

SI Unit of work is

Nm^-1 A
Joule B
Nms C
Both a and b D

Question # 8

Work is a

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

Question # 9

The ultimate source of money sources of energy is:

Sun A
Air B
Water C
Petroleum D

Question # 10

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

Unity A
Infinity B
Zero C
-Fd D

Question # 11

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 # 12

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

Potential A
Chemical B
Mechanical C
sound and heat D

Question # 13

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 # 14

Work is a Quantity

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

Question # 15

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Zero A
10.2 J B
100 J C
980 J D

Question # 16

Work has a dimension as that of:

Torque A
Angular momentum B
Linear momentum C
Power D

Question # 17

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 # 18

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

Nuclear field A
Conservative field B
Electric field C
Gravitational field D

Question # 19

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 # 20

Work done is independent of path followed in _______

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

Question # 21

Maximum work is done when force and displacement are

Parallel A
Antiparallel B
Perpendicular C
Both a and b D

Question # 22

A solar cell converts energy of the Sun into:

Heat energy A
Magnetic energy B
Light energy C
Sound energy D

Question # 23

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

1.25 J A
12.5 J B
125 J C
None of these D

Question # 24

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

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

Question # 25

Work is a:

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

The unit of work in CGS system is

Joule A
Erg B
Dyne C
Watt D

Question # 28

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 # 29

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 # 30

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

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 is 25J. the angle which the force makes with the direction of motion will be:	A. 60° B. 90° C. 30° D. 0°
2	The consumption of energy by a 60 W bulb in 2 minutes is:	A. 2 watt-hour B. 120 watt-hour C. 30 watt-hour D. None of these
3	Work is a:	A. Scalar quantity B. Vector quantity C. Base quantity D. None of these
4	Work done is maximum when angle between force and displacement is:	A. 0° B. 90° C. 180° D. None of these
5	A solar cell is made from:	A. Iron B. Silicon C. Germanium D. Copper
6	The commercial unit of electrical energy is :	A. K Watt B. KWH C. Horse power D. Joule
7	The Space around the Earth within which it exerts a force of attraction on other bodies is known as	A. Nuclear field B. Conservative field C. Electric field D. Gravitational field
8	Work done is independent of path followed in _______	A. Gravitational field B. Magnetic field C. Electric field D. All of these
9	When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:	A. 2 J B. 0.25 J C. 1 J D. 0.5 J
10	The ultimate source of money sources of energy is:	A. Sun B. Air C. Water D. Petroleum

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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 is maximum when angle between force and displacement is

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:`

Work is always done on a body when:

Which force is not a conservative force:

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

The work performed on an object does not depend on

SI Unit of work is

Work is a

The ultimate source of money sources of energy is:

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

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

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

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

Work is a Quantity

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Work has a dimension as that of:

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

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

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

Work done is independent of path followed in _______

Maximum work is done when force and displacement are

A solar cell converts energy of the Sun into:

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

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

Work is a:

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

The unit of work in CGS system is

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

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

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

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