Question # 1

The product of force and distance is :

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Force

Work

Torque

Nil

The motion of a body about an axis is called.

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Random motion

Vibratory motion

Rotatory motion

Circular motion

Dogs sweat through:

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Tongue

Legs

Skin

Glands

The work done will be zero when the angle between the force and the distance is:

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45^o

90^o

60^o

180^o

Heat form one of a metal rod a reaches to the other by the process of

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convection

radiation

conduction

both (a) and (b)

The kinetic energy of the body of mass 1000 kg moving a speed of 20 ms^-1 will be:

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2 x 10² J

2 x 10³J

2 x 10⁵J

2 x 10⁸J

Centripetal force always acts _________ to the motion:

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Opposite

Parallel

Perpendicular

Upward

Forces on doubled arm spanner are called.

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Torque

Couple

Moment of force

Momentum arm

During the hot summer day the vlaue of atomospheric pressure is:

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Increase

Decreases

Constant

None of these

The product of force and momentum arm is called:

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Couple arm

Torque

Rigid body

Axis of rotation

_______________ was a pupil of Galileo.

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Einstein

Robert

Al Razi

Torricelli

There are ______ modes of transfer of heat:

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1

2

3

4

Heat reflected form the body depends upon :

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Colour and form

Form and speed

Color and speed

None

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