Two waves are approaching each other with a velocity of `20m//s` and frequency `n`. The distance between two consecutive nudes is

Options

A. `(20)/(n)`
B. `(10)/(n)`
C. `(5)/(n)`
D. `(n)/(10)`

Answer

B

Explanation

Distance between the consecutive node = `lambda/(2)`
`lambda = (v)/(n) = (20)/(n)`
implies `(lambda)/(2) = (10)/(n)`