Question # 1

The speed of sound increases with the increase of in

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Pressure

Volume

Temperature

Density

The weight of an object an elevator moving down with an acceleration of 9.8 m/s2 will becomes

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Half

Double

Unchanged

Zero

The value of a time period of allow flying satellite is

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1 year

84 minutes

28 hours

1 day

The formula of centripetal acceleration is

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Food rich in proteins is:

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potato

grapes

vegetables

bread

For a rocket , the change in momentum per second of the ejecting gases is equal.

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Acceleration of the rocket

Momentum of rocket

Velocity of rocket

Thrust acting on rocket

For an ideal gas, the internal energy is directly proportional to.

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Pressure

volume

Mass

Temperature

The motion of a body moving along a circular path is called.

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Translational motion

Angular motion

Vibratory motion

Linear motion

Average translational K.E. of molecules for an ideal gas is given as

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1/2 KT

KT

2/3 KT

3/2 KT

An immediate source of energy for our body is:

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mango

Glucose

mushroom

meat

Pascal is the unit of

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Pressure

Force

Tension

Weight

Which is the example of vector quantity

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Torque

Speed

Density

Work

If the object is at 5 cm from the lens of simple microscope than its magnifying power will be.

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5

10

15

25

In stationary waves, the velocity of particle at the node is.

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Maximum

Infinite

Zero

Varible

If 20 waves passes through he medium in 2 sec of 10 ms-1 then he wavelength is.

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200 m

2 m

1 m

0.5 m

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

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Double

Half

One fourth

Remains same

A body covers a distance of 10 m in 1 sec with a constant velocity of 10 ms-1 , Acceleration produced by the body is.

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0 ms-1

2 ms-2

5 ms-2

10 ms-2

If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be.

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25%

50%

70%

100%

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