Figure shows wave patterns of three sounds a, b and c. Name the characteristic of sound which is same between a and b.

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Solution

The characteristic of sound that is common between the figures a and b are loudness and quality. The frequency of the wave is different.
The amplitude in both the waves are the same and hence, the loudness will remain the same as amplitude is directly proportional to the loudness of the note.
The waveform or pattern of the two waves is the same and hence, they would be of the same quality.

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