Question # 1

The power of an electric generating station is expressed in:

Choose an answer

Kilo Jule

Kilowatt-hour

Kilo watt

Watt

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

Choose an answer

Conservative filed

Non-conservative field

Electric field

None of these

The work performed on an object does not depend on:

Choose an answer

Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

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:

Choose an answer

+5 X 10¹J

+5 X 10²J

+5 X 10³J

+5 X 10⁴J

1 J = ________?

Choose an answer

10⁷erges

10^-7erges

10⁵erges

10^-5erges

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

Choose an answer

11 m/sec

11 km/sec

11 km/hour

11 cm/sec

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

Choose an answer

0°

90°

180°

None of these

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:

Choose an answer

Minimum Work

Maximum Work

Zero Work

Negative Work

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

Choose an answer

0.5 J

2 J

0.25 J

1 J

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

Choose an answer

Much more

Very small

No amount at all

None of these

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:

Choose an answer

60°

90°

30°

0°

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

Choose an answer

Positive

Negative

Zero

None of these

Work has the dimension as that of:

Choose an answer

Torque

Angular momentum

Linear momentum

Power

The work performed on an object does not depend on:

Choose an answer

Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

Work is a scalar product of

Choose an answer

Force, Velocity

Velocity, Displacement

Force, Displacement

Force, Momentum

A solar cell is made from:

Choose an answer

Iron

Silicon

Germanium

Copper

More Classes

Other Links

ECAT Physics Chapter 4 Work and Energy Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer