1.

A sound wave has a frequency of 3 khz and wavelength of 15cm.How much time will take to travel 2km.​

Answer»

Answer:

4.4445s

Explanation:

we KNOW that SPEED of a wave =frequency *wavelength

speed =3000HZ*15/100lamda

speed=450m/s

time TAKEN by the wave to travel 2km=1/450*2000m

=4.4445s



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