Question # 1

What happens to the thermal conductivity of a wall if its thickness is doubled?

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Become double

Remain the same

Become half

Become one fourth

The quantities that are completely decribed by only magnitude are.

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vector

Scalar

Base

Derived

Land breeze from land to sea during:

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Day

Night

Afternoon

Morning

1 KW (kilo Watt) is equal to:

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10² W

10³ W

10⁵ W

10⁶W

Density is quantity:

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Scalar

Vector

Constant

None of these

Turning effect of a force is called:

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Torque

Moment

Couple

Torque and momentum

When a block a place on the surface its weight produce.

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Tension

Momentum

Inertia

Normal reaction

The word science means.

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Intelligence

Nature

Knowledge

Philosphy

Bimetallic strip works on the principle of

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expansion of metals

contraction of metals

both (A) and (B)

unequal expansion of metals

If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be:

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Maximum

Minimum

Zero

None of the above

If force is capable of rotation a body in clockwise direction it is :`

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Clockwise

Anticlockwise

It has no direction

Nil

The transfer of heat by vibrating molecules in solids :

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Conduciton

Radiation

Convection

None

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