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Question 31335
JEE Physics · Hard

Waves on String: Energy in Standing Waves MCQ

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Energy in Standing WavesHardQuestion 31335

Question

Average energy density in a standing wave compared to the original travelling wave (same amplitude):
  1. A
    Half
  2. B
    Same
  3. C
    Double
    Correct
  4. D
    Zero

Correct answer

Double

Explanation

Standing wave = sum of two travelling waves. Total energy = twice that of one wave. Average energy density in standing wave = 2 × that of travelling wave.

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