Question # 1

This is used for

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Co-efficient of friction

Co-efficient of expansion

Co-efficient of viscosity

Co-efficient of contraction

Which of the following is not directed along the fixed axis of rotation.

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Angular displacement

Angular momentum

Centripetal acceleration

Angular acceleration

The fluid is said to be incompressible, if its density is.

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Zero

Very high

Constant

Very small

When the amplitude of a wave become double, its energy becomes

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One half

Two times

Three times

Four times

Force 12 N and 5 N are add, the resultant con not be

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13 N

6 N

7 N

17 N

the velocity of sound at 0 ^oC is 332 ms-1, the velocity of sound at 10 ^oC will be

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337.1 ms-1

338.1 ,ms-1

342.1 ms-1

328.1 ms-1

The fringe spacing in a double slit experiment can be increased by decreasing.

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Wavelength of light

Width of slits

Slit separation

Distance between the slits and the screen

The kinetic energy of molecules of an ideal gas at absolute zero is

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Very low

Very high

Zero

First increases then decreases

Dot product of two non zero vectors is zero it angle between them is.

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30^o

60^o

45^o

90^o

Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

The study of fluid dynamics is

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Easy

Complicated

Impossible

None of these

The efficiency of any heat engine can never be

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+ve

100%

-ve

None of these

Time period of geostationary satellite of radius 'R' is

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1 hour

48 min

1 day

1 month

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

The unit of work in base unit is

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Kg m-1 sec-2

Kgm sec-2

Kgm2 sec-1

Kgm-1 sec-1

the example of mechanical waves is

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Water waves

Infrared waves

Radio waves

Ultraviolet waves

The optical fiber is covered for protection by a

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Glass Jacket

Plastic Jacket

Copper Jacket

Aluminum Jacket

If the wave motion is 0.01 sec and wave speed is 100 ms-1 then frequency of wave is.

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0.5 Hz

1 Hz

10 Hz

100 Hz

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