10. A sound source produces 40 compressions and 40 rare factions in 0.

1.	10. A sound source produces 40 compressions and 40 rare factions in 0.4 sec. Find the(100 Hz]frequency of the wave
Answer» One compression and and one rarefaction constitutes one cycle. 40 compressions and 40 rarefactions involves 40 cycles. Time taken for one cycle is called time period. So, Time period = 0.4 s / (40) = 0.01 s Frequency = 1 / Time period = 1 / (0.01 s) = 100 Hz Please hit the like button if this helped you.

10. A sound source produces 40 compressions and 40 rare factions in 0.4 sec. Find the(100 Hz]frequency of the wave

Answer»

One compression and and one rarefaction constitutes one cycle.

40 compressions and 40 rarefactions involves 40 cycles.

Time taken for one cycle is called time period.

So, Time period = 0.4 s / (40) = 0.01 s

Frequency = 1 / Time period = 1 / (0.01 s) = 100 Hz

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