Question # 1

Work is a Quantity

Choose an answer

Vector

Scalar

Non-physical

None of these

Work is product of:

Choose an answer

Force and velocity

Heat and energy

Force and displacement

None of these

Which force is not a conservative force:

Choose an answer

Frictional force

Gravitational force

Electric force

Elastic spring force

Area under the force displacement graph gives

Choose an answer

Power

Work

Heat

Energy

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 space around the earth within which it expects a force of attraction on other bodies is known as:

Choose an answer

Nuclear field

Conservative field

Electric field

Gravitational field

Work done is maximum when angle between force and displacement is

Choose an answer

0°

90°

180°

None of these

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:

Choose an answer

1.25 J

12.5 J

125 J

None of these

When velocity of moving body is doubled, the quantity which is also doubled is its:

Choose an answer

K.E.

Acceleration

Momentum

P.E.

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

Choose an answer

0°

90°

180°

None of these

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 done by the force of friction is always

Choose an answer

Positive

Zero

Negative

Maximum

Work has the dimension as that of:

Choose an answer

Torque

Angular momentum

Linear momentum

Power

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 work done in moving a body between two points in a conservative field is independent of the

Choose an answer

Direction

Force applied

Path followed by the body

Power

SI Unit of work is

Choose an answer

Nm^-1

Joule

Nms

Both a and b

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