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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound1 Mark
MCQ
Loudness of sound increases with:
  • A
    The amplitude of vibrating body.
  • B
    The increase in surface area of vibrating body.
  • C
    The decrease in frequency of vibrating body.
  • D
    The increase in distance from the source of sound.
✓

Answer

  1. The increase in surface area of vibrating body.

Explanation:

Loudness increases with an increase in the amplitude of the wave or increase in the surface area of the source or increase in intensity. it is independent of frequency.

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