Question

Q.5. What is Doppler effect of sound.
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Answer 1

☆$\red {HELLO\:DEAR}$☆

The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source.

☆$\green {VISHU\:PANDAT}$☆

☆$\blue {FOLLOW\:ME}$☆

Answer 2

Answer:

the change in the pitch of the sound when source and the observer move away from each other