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Question 31237
JEE Physics · Hard

Sound Waves: Reflection MCQ

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ReflectionHardQuestion 31237

Question

Reverberation time in acoustics is the time for sound intensity to fall by:
  1. A
    50 dB
  2. B
    60 dB
    Correct
  3. C
    30 dB
  4. D
    10 dB

Correct answer

60 dB

Explanation

Reverberation time (RT60): time for sound to decrease by 60 dB (factor of 10⁶ in intensity) after source stops. Defined by Sabine: T = 0.161V/A.

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