Question

If frequency 25 find wave length

Answer 1

Answer:

The frequency of wave is given by

ν= λv

λ= νv

When the frequency of a sound wave is increased by 25%, then the new

wavelength is

λ ′ = ν+ 100

25νv

λ ′ = ν+ 4νv

λ ′= 45 νv

λ ' = 5ν4v

Hence, the percent change in wavelength is

λλ−λ′ ×100= νv

νv − 5ν4v ×100⇒− 41 ×100=−20%.

Hence, wavelength decreases by 20%

Explanation:

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