Explain the quantities that the terms Loudness and Pitch of sound depend on. Give units of those quantities.

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Solution

1. The loudness of sound depends on its amplitude. When the amplitude of vibration is large, the sound produced is loud.
Unit: metre (m)
(1 mark))
2. The Pitch determines the shrillness of sound and its depend on frequency.
Unit of Frequency: hertz (Hz)
(1 mark)

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(a) Explain the term 'pitch' of a sound. On what factor does the 'pitch' of a sound depend ?

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