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14. waves and sound — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics14. waves and sound1 Mark
MCQ
A man sitting in a moving train hears the whistle of the engine. The frequency of the whistle is $600 Hz$
  • A
    The apparent frequency as heard by him is smaller than $600 Hz$
  • B
    The apparent frequency is larger than $600 Hz$
  • ✓
    The frequency as heard by him is $600 Hz$
  • D
    None of the above
✓

Answer

Correct option: C.
The frequency as heard by him is $600 Hz$
c
(c) Since there is no relative motion between the listener and source, hence actual frequency will be heard by listener.

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