Question # 1

Work is a:

Choose an answer

Scalar quantity

Vector quantity

Base quantity

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°

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

Area under the force displacement graph gives

Choose an answer

Power

Work

Heat

Energy

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 force and displacement are perpendicular to each other than work is equal to

Choose an answer

Unity

Infinity

Zero

-Fd

A solar cell is made from:

Choose an answer

Iron

Silicon

Germanium

Copper

When two protons are brought are brought closer potential energy of both of them:

Choose an answer

Increases

Decreases

Remains same

None of these

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

Choose an answer

Direction

Force applied

Path followed by the body `

Power

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

Work is a always done on a body when

Choose an answer

A force acts on it

It moves through certain distance

None of A or B is correct

Both A and B are correct

The energy stored int he water of the dam is:

Choose an answer

Electric energy

Kinetic energy

Potential energy

None of these

The types of mechanical energy is/are:

Choose an answer

Kinetic energy

Potential energy

Both of these

None of these

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

Choose an answer

Maximum

Minimum

Zero

Unity

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

Choose an answer

Positive work

Negative work

Zero work

Infinte work

More Classes

Other Links

Physics ECAT Pre Engineering 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