Q. The time period of a sound wave is 0.01 seconds. What will be its frequency in Hz?
Answer: 100
Notes: Frequency is the number of wave cycles or revolutions per second. The formula for period (T) in terms of frequency is given by : f = 1/T According to question T = 0.01 seconds. So, f = 1/0.01 = 100/1 = 100 Hz

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