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Question 31279
JEE Physics · Hard

Sound Waves: Doppler Application MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Doppler ApplicationHardQuestion 31279

Question

A source moves toward observer at v/2 (half speed of sound). Observed frequency is:
  1. A
    f₀
  2. B
    2f₀
    Correct
  3. C
    3f₀
  4. D
    f₀/2

Correct answer

2f₀

Explanation

f = f₀v/(v−v_s) = f₀v/(v−v/2) = f₀v/(v/2) = 2f₀.

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