Question

A sound wave of frequency 4 khz and wavelength 25 cm is travelling in a liquid. What will be the time taken by the sound wave to cover a distance of 1.2km in the liquid?

Answer 1

Dear Student

Frequency, n = 4kHz = 4000 Hz
Wavelength, λ = 25 cm = 0.25 m

Speed of sound wave, v = n x λ
v = 4000 x 0.25 = 1000 m/s

Distance, s = 1.2 km = 1200 m
t = s/v
t = 1200/1000
t = 1.2 s

Time taken will be 1.2 seconds.

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