Question # 1

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

Anticlockwise torque is taken:

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Negative

Neutral

Positive

Nil

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

Latent heat of vaporization is denoted by:

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H1

Hm

Hv

Hf

The Atwood machine can be used to find the acceleration due to gravity using the equation

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g = 2 (m1 x m2)/(m1 + m2) a

g = (m1 - m2)/(m1 + m2) a

g = (m1 + m2)/(m1 - m2) a

Which one of the following converts light energy into electrical energy?

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Electric Bulb

Electric generator

Photocell

Electric cell

Plasma is in ___________ form.

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Moleculer

Kinetic

Static

Ionized

The energy of a body during the motion is called:

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Potential energy

Kinetic energy

Elastic P.E.

Heat energy

Plasma exist in _______________

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Earth

Satellite

Moon

Sun

Forces on doubled arm spanner are called.

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Torque

Couple

Moment of force

Momentum arm

Prefix naming as Giga has a symbol.

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M

G

m

g

A large water reservoir keeps the temperature of nearby land moderate due to

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Low temperature of water

Low specific heat of water

Less absorption of heat

Large specific heat of water

if force on body on y-axis is 100N than x-axis is:

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1000 N

200 N

600 N

0 N

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