Which of the following conditions will not show any Doppler effect ........

General Science (Easy) Physics

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Which of the following conditions will not show any Doppler effect?

When source and listener both are at rest

When medium alone is moving

When source and listener are moving in mutually perpendicular directions

All of the above

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Explanation:

Conditions for no Doppler effect : (i) When source (S) and listener (L) both are at rest. (ii) When medium alone is moving. (iii) When S and L move in such a way that distance between S and L remains constant. (iv) When source S and listener L, are moving in mutually perpendicular directions