Question # 1

If 332 waves pass through a medium in 1 second with speed of 332 ms-1 then wavelength will be

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7 m

332 m

664 m

1 m

The terminal velocity can be obtained by using

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Newton's law

Stock's law

Guass's law

None of these

The power needed to lift a mass of 5000 g to height of 1 m in 2 secnd is

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2.45 watt

24.5 watt

245 watt

2.45 watt

When the amplitude of a wave is increase to doubled is energy.

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Remain the same

Increases 4 times

Increases by two times

Decreases by half

Centripetal force perform

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Maximum work

Minimum work

Negative work

No work

The types of optical fibres are

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Three

Four

Five

Six

Which of the following is evidence of wave nature of light

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Interference

Diffraction

Polarization

All of these

Speed of sound in vacuum is

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280 ms-1

332 ms-1

333 ms-1

Zero ms-1

Bright fringes are also called as

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Minima

Maxima

Wave front

Ray of light

The waves used in radar speed trap are

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Longitudinal

Sound wave

Micro waves

Matter waves

A paratooper moves downward with

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Zero acceleration

Constant acceleration

Positive acceleration

Negative acceleration

When hot and cold water are mixed, the entropy.

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Decreases

Increases

Remain constant

Zero

One radian is equal to.

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75.3^o

57.3^o

35.7^o

73.3^o

Parallel vectors of same magnitude will be

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Equal

Opposite

Both a and b

None of these

The dimension of power is

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MLT-1

ML2T-2

ML2T2

ML2T-3

Engineering physics, Astrophysics,Bio Physics and Geophysics are

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Branches of Physics

Branches of Chemistry

Applied Physics

None of these

When speed of a body is doubled then its

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K.E. is doubled

P.E. is doubled

Acceleration of doubled

Momentum is doubled

Name the quantity which is a vector.

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Speed

Force

Temperature

Density

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