Question

the wave length of a radio wave is 2m. find its frequency

Answer 1

frequency =3x10^8/2
. =1.5x 10^8

Answer 2

Answer:  $1.5\times 10^{8}Hz$  

Explanation:

To calculate the frequency of the ray, we use the formula:

$\nu=\frac{c}{\lambda}$

where,

$\nu$ = Frequency of the ray = ? Hz

c = Speed of light = $3\times 10^8m/s$

$\lambda$ = Wavelength of the ray =2 m

Putting values in above equation, we get:

$\nu=\frac{3\times 10^8m/s}{2m}\\\\\nu=1.5\times 10^{8}s^{-1}=1.5\times 10^{8}Hz$       $(1sec^{-1}=1Hertz)$