Question # 1

The space around the earth within it exerts a force of attraction on other bodies of known as:

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Nuclear field

Conservative field

Electric field

Gravitational field

The dimensions of work

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[MLT^-1]

[MLT^-2]

[ML²T^-2]

[MLT]

The energy stored int he water of the dam is:

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Electric energy

Kinetic energy

Potential energy

None of these

Work has a dimension as that of:

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Torque

Angular momentum

Linear momentum

Power

The types of mechanical energy is/are:

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Kinetic energy

Potential energy

Both of these

None of these

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

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Positive

Negative

Zero

None of these

Which of the following type of force can do no work on the particle on which it acts:

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Frictional force

Gravitational force

Electric force

Centripetal force

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

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Unity

Infinity

Zero

-Fd

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:

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+5 X 10¹J

+5 X 10²J

+5 X 10³J

+5 X 10⁴J

Work is a:

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Scalar quantity

Vector quantity

Base quantity

None of these

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

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Direction

Force applied

Path followed by the body

Power

The ultimate source of money sources of energy is:

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Sun

Air

Water

Petroleum

Area under the force displacement graph gives

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Power

Work

Heat

Energy

Work has the dimensions as that of

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Torque

Angular momentum

Linear momentum

Power

Watt x second is unit of:

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Force

Work

Power

None of these

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

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Zero J

1 J

0.1 J

0.01 J

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