πŸ“Š Physics
Q. In which of the following cases Doppler effect is not seen?
  • (A) When the velocity of source and listener is equal to or greater than the sound velocity
  • (B) When source and listener moves in opposite direction
  • (C) When the velocity of source and listener is less than the sound velocity
  • (D) None of the above
βœ… Correct Answer: (A) When the velocity of source and listener is equal to or greater than the sound velocity

Explanation: If the velocity of source and listener is equal to or greater than the sound velocity then Doppler effect is not seen.

Explanation by: Mr. Dubey
If the velocity of source and listener is equal to or greater than the sound velocity then Doppler effect is not seen.

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