Question # 1

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

The ultimate source of money sources of energy is:

Choose an answer

Sun

Air

Water

Petroleum

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

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:

Choose an answer

+5 x 10¹J

+5 x 10²J

+5 x 10³J

+5 x 10⁴J

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

Choose an answer

Potential

Chemical

Mechanical

sound and heat

Work has the dimensions as that of

Choose an answer

Torque

Angular momentum

Linear momentum

Power

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

Choose an answer

Zero J.

0.1 J

1 J

0.01 J

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Choose an answer

mgh

Its wight

Weight X height

Zero

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

Choose an answer

0.5 Kwn

2 Kwh

1 Kwh

None of these

Work is a:

Choose an answer

Scalar quantity

Vector quantity

Base quantity

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

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

Choose an answer

5 Kwh

0.5 Kwh

2.5 Kwh

3.2 Kwh

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

Choose an answer

Zero

10.2 J

100 J

980 J

Which one is conservative force

Choose an answer

Electric force

Frictional force

Normal force

Air resistance

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

Choose an answer

0°

90°

180°

None of these

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