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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound1 Mark
MCQ
What happens when sound strikes a surface?
  • ✓
    Sound gets reflected.
  • B
    Sonic boom is produced.
  • C
    Infrasonic sound is produced.
  • D
    None of these.
✓

Answer

Correct option: A.
Sound gets reflected.
Sound bounces off a solid or a liquid like a rubber ball bounces off a wall. The law of reflection of sound states that the directions in which the sound is incident and reflected make equal angles with the normal to the reflecting surface at the point of incidence and the three lie in the same plane.

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