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Question 31275
JEE Physics · Hard

Sound Waves: Doppler Application MCQ

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Doppler ApplicationHardQuestion 31275

Question

A source emits f₀, moves in a circle at radius R and angular speed ω. Observer at the centre hears:
  1. A
    f₀ always
    Correct
  2. B
    Frequency modulated between f_max and f_min
  3. C
    f₀(1 + v_s/v)
  4. D
    No sound

Correct answer

f₀ always

Explanation

When source moves in a circle with observer at centre, the radial velocity of source relative to observer is always zero. No Doppler shift — observer hears f₀ at all times.

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