Question # 1

The single force that has the same effect as the combined effect of all the force to be added is called a

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Opposite force

Single force

Resultant force

Resultant vector

Metals are good conductors of heat due to :

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Free electrons

Big size of molecules

Small size of molecules

None of these

The quantity of heat absorbed by the body depends upon:

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Colour of surface

Nature of surface

Shape of surface

Both a and b

Leslie cube have faces:

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2

3

4

5

A body has translatory motion if it moves along a.

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Straight line

Curved path

Line without rotation

Circle

Sliding friction can be converted into rolling friction by using

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Levers

Wedges

Ball bearings

Pulleys

The force which opposes the motion is called.

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Momentum

Friction

Inertia

Tension

The value of latent heat of vaporization of water is:

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2.26 x 10⁶ Jkg^-1

2.29 x 10⁵Jkg^-1

2.26 x 10^-6Jkg^-1

3.29 x 10^-5Jkg^-1

Kinetic and potential energy are the kinds of energy:

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Chemical

Nuclear

Light

Mechanical

The force exerted perpendicularly on unit of area of an object is called:& nbsp

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strain

young's modulus

pressure

buoyant force

The value of sin θ at an angle of 60o is

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0.5

0

0.707

0.866

The unit of torque is:

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N

Nm

m

m/n

Mercury is used as thermometric material because it has

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Uniform thermal expansion

Low freezing point

Small heat capacity

All the above properties

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