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Propagation of Sound Waves — PHYSICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9PHYSICSPropagation of Sound Waves2 Marks
Question
Which wave property determines (a) loudness, (b) pitch?
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Answer

(a) Amplitude (b) Frequency
(a) The loudness of a sound depends on its amplitude. If the amplitude of a sound is large, then the sound produced will also be loud.
(b) The pitch of a sound depends on its frequency. A sound will be considered a high pitched sound, if its frequency is high.

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