Question

A sound wave has a frequency 2000kz and wavelength 40cm how long it travel to 1.6km

Answer 1

Heya! here is your answer ☺
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Given:-

Frequency. = 2000kHz = 2000000Hz
Wave length = 40cm = 0.4m
Distance. =1.6km

Solution:-

We know velocity = frequency×wavelength

v = frequency × wavelength
=2000000×0.4
=800000m/s

We know,
Time = Distance/ Velocity
=1600/800000
=0.002 sec



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