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Mechanical Properties of Fluids
Question
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What do you mean by statement “Doppler effect in sound is asymmetric'?

Answer

When a source moves with certain velocity towards a stationary observer, the apparent frequency of wave received is different from that of when the observer moves with the same velocity towards the stationary source. This is what we mean by Doppler effect in sound is asymmetric. 

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Some More Questions From Mechanical Properties of Fluids Chapter

Define longitudinal wave motion.

Which of the two waves - elastic waves or electromagnetic waves does need any material media for its propagation?

What is sound?

How sound is produced?

Can sound travel in vacuum?

Can two persons hear each other on the moon? Explain.

Can electromagnetic wave propagate in vacuum?

Can we listen in vacuum?

Which of the two moves forward during wave motion - particle or disturbance?

What type of wave is sound wave when it travels in air?