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

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics14. waves and sound1 Mark
MCQ
Which of the following statements is false
  • A
    The wavelength of sound does not depend on reference frame of observer
  • B
    Motion of source of sound effects the wavelength
  • C
    When source of sound and observer both are at rest and medium is moving than wavelength and velocity of sound changes in equal proportion
  • ✓
    When only medium moves from source to observer, frequency heard by obsever will be greater than original frequency
✓

Answer

Correct option: D.
When only medium moves from source to observer, frequency heard by obsever will be greater than original frequency
d

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