Sawaal
5
Q:

A doppler effect occurs when a source of sound moves

A) away from you B) towards you
C) Both A & B D) None of the above

Answer:   C) Both A & B



Explanation:

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

a_doppler_effect_occurs_when_a_source_of_sound_moves1560770484.jpg image

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