Question

a sound wave has a frequency of 2 kwz and wave length os 35 cm find the time taken by the wave to travel 1.5 km​

Answer 1

F= 2000hz
w.l. = .35m

speed = f × w.l.
700m/s

now dist. = 1500 m
time= d/sp.
1500/700
15/7s
2.142sec.

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