Q37 of 47 Page 13

On which property of vibrations does the loudness of sound depends? 

The loudness of sound is determined by its amplitude. When the amplitude of a vibrating is large, the sound produced is loud. When the amplitude is small, the sound produce is feeble.

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35 Why the voice of men, women and children are different? 36 What is eardrum? How does it is play an important role in hearing? 38 Which property of vibrations determines the pitch of the sound? Explain giving some examples. 39 What is the audible range of frequencies for human beings? Explain.