Question

A certain sound wave in air speed
140s and wavelength 1.7 m for this
wave calculate
a) the frequency
b)the period​

Answer 1

Answer:

given: wave length = 1.7m

time taken= 140s

so, frequency= c/lambda

c=3×10^8, lambda = wavelenght =1.7m

frequency = 3×10^8/1.7

frequency = 1.8×10^8 hertz.

time period :

from frequency formula

frequency= 1/time period

time period = 1/frequency

as, frequency = 1.8×10^8

time period = 1/(1.8×10^8)

time period = 0.6×10^-8s

HOPE THE ANSWER IS CLEAR....