Question # 1

Work is a:

Choose an answer

Scalar quantity

Vector quantity

Base quantity

None of these

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 consumption of energy by a 60 W bulb in 2 minutes is:

Choose an answer

2 watt-hour

120 watt-hour

30 watt-hour

None of these

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

The ultimate source of money sources of energy is:

Choose an answer

Sun

Air

Water

Petroleum

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

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:

Choose an answer

Power

Work

Pressure

None of these

A solar cell is made from:

Choose an answer

Iron

Silicon

Germanium

Copper

Maximum work is done when force and displacement are

Choose an answer

Parallel

Antiparallel

Perpendicular

Both a and b

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:`

Choose an answer

Minimum work

Maximum work

Zero work

Negative work

When a wall is pushed by a person very strongly, he has done:

Choose an answer

Maximum work

Zero work

Positive 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

A solar cell converts energy of the Sun into:

Choose an answer

Heat energy

Magnetic energy

Light energy

Sound energy

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°

Work done on a body by gravity in lifting it up to certain height is

Choose an answer

Maximum

Minimum

Zero

Negative

More Classes

Other Links

ECAT Pre General Science 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