The frequency of the rations having wave number `10m^(-1)` is:

Options

A. `10s^(-1)`
B. `3xx10^(7)s^(-1)`
C. `3xx10^(11)s^(-1)`
D. `3xx10^(9)s^(-1)`

Answer

D

Explanation

`overline(v)=(1)/(lamda)`
`v=coverline(v)=(c)/(lamda)=3xx10^(8)xx10=3xx10^(9)s^(-1)`