Question

1. A sound wave has a frequency of 3kHz
and wavelength of 15c.m. How much
time will it take to travel 2k.m?

Answer 1

Answer:

It is given that

Frequency =3kHz=3000Hz

Wavelength =15cm=15/100 m

we know that

Velocity =Frequency into wavelength

V=2000(15/100)

V=300m/sec

Now time =distance /speed

Time = 2000/300m/sec

Time= 6.666sec