Question

the wavelengths of sound waves in hydrogen gas corresponding to the lower limit of audability is (speed of sound in hydrogen gas is about 1350 m/s) ​

Answer 1

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⭐Actually Welcome to the Concept WAVES AND IT'S PROPAGATION

Now basically here, we have to find the wavelength of the Sound wave in the hydrogen gas,

Since we know the relation that,

⭐Velocity = Frequency * Wavelength

since for the lower limit of Audability, the Frequency of sound in Hydrogen gas is 20 Hz

so applying the formula we get as

1350 = 20 * lambda

thus, lambda = 1350÷20 = 67.5 m

⭐thus the wavelength is 67.5 metres