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in Physics by (83.6k points)

Calculate the speed of sound in a gas in which two wavelength 204 cm and 208 cm produce 20 beats in 6 second.

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Here, wavelength of one wave, λ1 = 204 cm

Wavelength of the second wave λ2= 208 cm

Let speed of sound in the gas = v cm/s

Frequency of one wave = v0

Frequency of second wave = v2

Number of beats produced per second,

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