Question # 1

In rotational motion the torque is equal to rate of change of

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Angular velocity

Linear momentum

Angular momentum

Angular acceleration

Which is the process in which temperature of the system remains constant.

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Adiabatic process

Isochoric process

Isothermal process

Isobaric process

Reapters are placed in new system at distance of.

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30 km

50 km

80 km

100 km

The study of fluid dynamics is

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Easy

Complicated

Impossible

None of these

If the temperature of a gas is constant then <1/2 mv2> of the molecules of gas will be.

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Constant

Zero

Increase

Decrease

If the radius of droplet becomes half, then its terminal velocity will become.

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Double

Half

One fourth

Remains same

The magnification of a convex lens of focal length 5 cm is equal to.

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5

6

10

23

One revolution is equal to.

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90^o

180^o

360^o

270^o

If the temperature of sink is absolute zero then the efficiency of heat engine engine should be.

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100%

50%

Infinite

zero

A quantity which indicates the state and direction of a vibrating body is known as

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Time period

Amplitude

Phase

Frequency

The state of human blood flow can be found by using.

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Newton's formula of speed of sound

Interference of sound

Phenomena of beats

Doppler's effect of sound

A layer of rock holding water that allows water to percolate through it with pressure is called.

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Geyeser

Aquifer

Stem vent

Hot spring

the acceleration along x -axis direction in case of projectile is.

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Zero

Equal to gravity

Maximum

Constant

The unit of rotational K.E. is

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rAD/SEC

Js

J

Kgm2

The resultant of two forces 3 N and 4 N acting at right angle to each other is

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7 N

5 N

4 N

1 N

According to Newton's formula, the speed of sound in air at STP is

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332 ,ms-1

340 ms-1

350 ms-1

280 ms-1

In stationary waves, the particle velocity at nodes is

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Minimum

Maximum

Zero

Constant

The amplitude of a vibrating body at resonance in vacuum is

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Minimum

Maximum

Zero

Infinite

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