Question # 1

Turning of radio is example of.

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Mechanical resonance

Electrical resonance

Physical resonance

Biological resonance

No body begins to move or comes to rest of itself was given by

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Newton

Pascal

Bernoulli

Bu Ali Sina

If an object lies at focus point F in front of a converd lens, its image is formed at.

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2F

F

3F

Infinity

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

An elevator is moving up with an acceleration equal to 'g' An apparent weight of the body in an elevator is.

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Zero

Equal to real weight

2 mg

3 mg

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

the wavelength of transverse wave travelling with a speed 'v' having frequency 'f' in equal to

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f/v

Vf

V/f

f/V2

The path followed by a projectile in known as its

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Range

Trajectory

Cycle

Height

The SI unit of product of pressure and volume is.

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_Watt

Joule

Pascal

Newton

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

Bunsen burner works on the principle of.

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Venturi effect

Terricilli's effect

Bernoulli's effect

None of these

The slope of velocity time graph shows

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Total distance covered

Average acceleration

Instantaneous acceleration

Torque

The efficiency of diesel engine is about

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25% to 30%

35% to 40%

40% to 50%

50% to 60%

Kg ms-1 can also be written as

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Nm

Ns

Ns-1

Js

The Bragg's equation is given by

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The distinguish between transverse and longitudinal wave_______ is used.

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Refraction

Interference

Diffraction

polarization

The dot product of two vectors A and B will be zero, if angle between A and B is

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Zero

30^o

90^o

180^o

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

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