ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

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 # 2

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 # 3

A solar cell converts energy of the Sun into:

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

Question # 4

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 # 5

Tick the conservation force:

Tension in a string A
Air resistance force B
Elastic spring C
Frictional force D

Question # 6

The energy stored int he water of the dam is:

Electric energy A
Kinetic energy B
Potential energy C
None of these D

Question # 7

A solar cell is made from:

Iron A
Silicon B
Germanium C
Copper D

Question # 8

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 # 9

1 J = ________?

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

Question # 10

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 # 11

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 # 12

Work is a:

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

Question # 13

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 # 14

When the body is 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 # 15

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 # 16

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 # 17

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 # 18

Work is a Quantity

Vector A
Scalar B
Non-physical C
None of these 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

The ultimate source of money sources of energy is:

Sun A
Air B
Water C
Petroleum D

Question # 21

The commercial unit of electrical energy is :

K Watt A
KWH B
Horse power C
Joule D

Question # 22

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 # 23

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 # 24

Which of the following is not a unit of power:

J-sec A
Watt B
N m/sec C
Horsepower D

Question # 25

Work is a

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

Question # 26

Which of the following types 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 # 27

Which one is conservative force

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

Question # 28

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

Maximum A
Minimum B
Zero C
None of these D

Question # 29

Area under the force displacement graph gives

Power A
Work B
Heat C
Energy D

Question # 30

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

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

Sr.#	Question	Answer
1	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
2	Which of the following type of force can do no work on the particle on which it acts:	A. Frictional force B. Gravitational force C. Electric force D. Centripetal force
3	1 J = ________?	A. 10⁷erges B. 10^-7erges C. 10⁵erges D. 10^-5erges
4	Work done on a body by gravity in lifting it up to certain height is	A. Maximum B. Minimum C. Zero D. Negative
5	Most of the geysers occur in:	A. Volcanic regions B. Magnetic regions C. Northern region D. None of these
6	A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:	A. 0° B. 30° C. 60° D. 90°
7	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
8	Watt x second is unit of:	A. Force B. Work C. Power D. None of these
9	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
10	The types of mechanical energy is/are:	A. Kinetic energy B. Potential energy C. Both of these D. None of these

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