ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

Work is a:

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

Question # 2

Work has the dimensions as that of

Torque A
Angular momentum B
Linear momentum C
Power D

Question # 3

Which one is conservative force

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

Question # 4

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 # 5

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

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

Question # 6

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 # 7

The tidal energy is produced due to rotation of Earth relative to:

Moon A
Sun B
Oceans C
Water D

Question # 8

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 # 9

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 # 10

SI Unit of work is

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

Question # 11

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 # 12

Work done is lowering the bucket into the well is:

Zero A
Positive B
Negative C
None of these D

Question # 13

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

0° A
90° B
180° C
None of these D

Question # 14

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

0° A
90° B
180° C
None of these D

Question # 15

Work is a scalar product of

Force, Velocity A
Velocity, Displacement B
Force, Displacement C
Force, Momentum D

Question # 16

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

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

Question # 17

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 # 18

Maximum work is done when force and displacement are

Parallel A
Antiparallel B
Perpendicular C
Both a and b D

Question # 19

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 # 20

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

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

Question # 21

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

60° A
90° B
30° C
0° D

Question # 22

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 # 23

Work done along a closed path in a gravitational field is:

Maximum A
Minimum B
Zero C
Unity D

Question # 24

Work done by the force of friction is always

Positive A
Zero B
Negative C
Maximum D

Question # 25

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 # 26

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 # 27

Tick the conservative force

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

Question # 28

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:

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

Question # 29

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 # 30

The tidal energy is due to gravitational pull of :

sun A
moon B
Mars C
None of these D

Sr.#	Question	Answer
1	The tidal energy is due to gravitational pull of :	A. sun B. moon C. Mars D. None of these
2	Work is a:	A. Scalar quantity B. Vector quantity C. Base quantity D. None of these
3	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. 0.5 J B. 2 J C. 0.25 J D. 1 J
4	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
5	The dimensions of work	A. [MLT^-1] B. [MLT^-2] C. [ML²T^-2] D. [MLT]
6	Work done by the force of friction is always	A. Positive B. Zero C. Negative D. Maximum
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	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
9	Work-energy principle states that work done on the body by applied force is equal to change in:	A. Potential energy B. Kinetic nergy C. Linear momentum D. None of these
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 is a:

Work has the dimensions as that of

Which one is conservative force

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

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

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

The tidal energy is produced due to rotation of Earth relative to:

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 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:

SI Unit of work is

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

Work done is lowering the bucket into the well is:

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

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

Work is a scalar product of

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

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

Maximum work is done when force and displacement are

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:`

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

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 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:

Work done along a closed path in a gravitational field is:

Work done by the force of friction is always

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

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

Tick the conservative force

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:

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

The tidal energy is due to gravitational pull of :

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