Question # 1

The wavelength of fundamental note in one end closed pipe in term of length 'l' of pipe is.

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4 l

2l

l

1/4 l

The apparent change in the pitch of sound due to relative motion is called.

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Carnot theorem

Interference

Doppler effect

Beats

The speed of stars and galaxies can be calculated by

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Compton effect

Stefan's law

Doppler's effect

Pascal's law

With increase of temperature, speed of sound.

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Remains constant

Becomes zero

Decreases

Increases

The distance between two consecutive crest is called.

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Displacement

Amplitude

Wave front

Wavelength

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

The speed of sound in air does not depend upon

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Temperature

Pressure

Density

Medium

the example of mechanical waves is

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Water waves

Infrared waves

Radio waves

Ultraviolet waves

When two identical travelling waves are superimposed, velocity of resultant wave.

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Decreases

Increases

Remain same

Becomes zero

The speed of sound is greater in solids due to their high.

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Density

Pressure

Temperature

Elasticity

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Physics English Medium Fsc Part 1 Chapter 8 Online MCQs Test MCQs With Answers

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