Question # 1

The work done in lifting a brick of mass 2 kg through a height of 5 m above the ground will be:

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2.5 J

12.5 J

50 J

100 J

Normal human body temperature is

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15oC

37oC

37oF

98.6oC

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)

Andromeda is one of the billions of galaxies of known.

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Star

Asteroid

Pole

Universe

The energy possessed by a body due to height is called:

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P.E

K.E

Both

None

Centripetal acceleration of a body is given by formula:

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a_c=v/r

a_c=mv²/r

a_c=v/r²

a_c=v2/r

If heat Q flows in time 't' through some metal then rate of flow of heat is defined as

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Flow of heat = 2Qt

Flow of heat = Q/t

Flow of heat = t/Q

Flow of heat = Qt

Specific heat of water is J kg^-1 K^-1IS:

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4200

4000

1000

2500

The scientist who notice that all the freely falling objects hae same acceleration.

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Einstein

Galileo

Coulomb

Newton

The tendency of doing work is called :

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Time

Energy

Force

Area

The weight of a body is 100 N its weight on moon is :

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0.17 Kg

1.7 N

17 N

170 N

The sum of kinetic energy and potential energy of molecules or atoms is called.

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Temperature

Internal energy

Kinetic energy

Potential energy

Rate of change of velocity is known as.

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Acceleration

Speed

Velocity

Distance

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