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Which is an alteration in the observed frequency of a sound due to motion of either the source or the observer?

Which is an alteration in the observed frequency of a sound due to motion of either the source or the observer?

ذریعہ یا مبصر کی حرکت کی وجہ سے آواز کی مشاہدہ شدہ فریکوئنسی میں کون سا ردوبدل ہے؟
Explanation
  • The Doppler effect refers to the change in observed frequency of a sound when the source or observer is in motion.
  • It causes the frequency to increase as they move closer and decrease as they move apart.