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Mechanical Properties of Fluids
Question
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State the most essential condition for observing interference.

Answer

The most essential conditions for observing interference are:
i) Two sources of sound must be coherent, and
ii) The sources should emit monochromatic waves. 

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Some More Questions From Mechanical Properties of Fluids Chapter

Define transverse wave motion.

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?