Question # 1

The centre of gravity of uniform triangle is:

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Point of intersection of medians

On its vertex

On middle point of its axis

Point of intersection of diagonal

Conduction on heat occur at ________ rate in materials

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Different

Same

Both A and B

None

The large unit of work is:

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Kilowatt

Kilo joul

Mega joul

Both B and C

If a liquid of mass 'm' requires thermal energy 'ΔQv' to completely change into gas at its boiling point without any change in its temperature, then its latent heat of vapourization can be calculated as following:

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Hv = m/ΔQv

Hv = mΔQv

Hv = cmΔQv

Hv =ΔQv/m

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

Brownian motion is an example of.

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Linear motion

Random motion

Circular motion

Vibratory motion

Newton discovered the cause of falling apple in :

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1886

1905

1665

1600

Outer edge of the curved road is elevated to prevent

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Circular motion

Centripetal force

Skidding

Protection

If a force F makes an angle θ with the direction of motion of the force, then the formula for the work done will be:

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W = FS

W = FS cosθ

W = FS sinθ

W = FS tanθ

Land and Sea breezes are the results of:

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Conduction

Convection

Radiation

Conduction and radiation

Thermostat is a controlling switch:

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Heat

Temperature

Sound

Light

The mass of a body is 1 kg, its mass in deep space is :

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1 Kg

0.5 Kg

0.25 kg

0

The machine which use unequal masses to find the value of "g" is ________

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Free fall apparatus

Atwood machine

Pulley

None

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