Question

# Which of the following time periods of a sound wave would result in the highest pitch?

A
0.2 s
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B
0.02 s
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C
0.1 s
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D
1 s
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Solution

## The correct option is A 0.02 sThe way our brain interprets the frequency of a sound is called the pitch. The faster the vibration of the source, the higher is the frequency and the higher is the pitch. We know frequency, f=1Time period. Among the given waves, the wave with a time period of 0.02 s has the least time period. Therefore, from the above equation, we can say that it has the maximum frequency i.e. 10.02=50 Hz. Since pitch is directly proportional to frequency, the wave with a time period of 0.02 s has the maximum pitch among the given.

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