A series of compressions and rarefactions of a sound wave is shown in figure. Given that the sound wave has a frequency of 1600 Hz and a sped of `320 m s^(-1)`

Calculate the distance between P and Q

Options

A. 0 . 3 m
B. 0 . 4 m
C. 0 . 6 m
D. 0 . 8 m

Answer

C

Explanation

As ` v = u lambda `
`rArr 320 = 1600 lambda rArr lambda = 0 . 2 m `
There are three wavelengths from P to Q (one wavelength is the distance from a compression to the adjacent compression ) `:.` Distance between P and Q ` = 3 xx 0 . 2 = 0 . 6 m `