A sound wave has frequency 2kHz and wavelength 40 cm how time it takes to travel 4 km
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2khz means 2000 cycles/sec..
1cycle length=40cm
so to travel 4000m it should complete 4000(meters)/0.40(meters)=10000(these many wavelengths or cycles)
and to complete these many cycles wave require,
2000*x=10000
x=5 seconds.
1cycle length=40cm
so to travel 4000m it should complete 4000(meters)/0.40(meters)=10000(these many wavelengths or cycles)
and to complete these many cycles wave require,
2000*x=10000
x=5 seconds.
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