Question

a source of sound produces 20 compressions and 20 rarefaction in 0.2 seconds. the distance between a compression and the next consecutive rarefaction is 50 cm. find the wavelength, frequency and time period of the wave.​

Answer 1

Explanation:

Wavelength is total path length between two rarefractions or compression

So, Wavelength = 50 × 2 = 100 cm

And, Frequency = 20/0.2

                           = 100 Hz

We know,

Time period = 1/f

                    = 1/100

                    = 0.01 second 

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