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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound1 Mark
MCQ
Sound is produced when:
  • A
    The prongs of the fork are vibrated.
  • B
    Stretched rubber band is plucked.
  • C
    Mechanical vibrations are produced.
  • D
    All of these.
✓

Answer

  1. All of these.

Explanation:

Sound is produced when something vibrates. The vibrating body causes the medium (water, air, etc.) around it to vibrate. Vibrations in air are called traveling longitudinal waves, which we can hear. Sound waves consist of areas of high and low pressure called compressions and rarefactions, respectively.

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