Question

the speed of sound in air 340ms and that in glass is 4000ms what is the ratio of the wavelength of sound of a frequency in the two media​

Answer 1

Answer:

Explanation:

Given,

Wave Velocity in air (v) = 340 m/s

Wave Velocity in Glass (vₙ) = 4000 m/s

Frequency = f

Let Wavelength in air be λ

Let Wavelength in glass be λₙ

From Wave Equation,

v = λf

$\frac{340}{f}$ = λ ----------(i)

vₙ = λₙf

$\frac{4000}{f}$ = λₙ --------(ii)

Comparing these,

$\frac{340}{4000}$ = $\frac{λ}{λₙ}$

Hence, ratio = 17:200