Question

The speed of an electromagnetic wave is a constant, 3.0 × 10 8m/s. The wavelength of a wave is 0.6 meters.

What is the frequency?
A.1.8 × 10 8Hz
B.5.0 Hz
C1.8 Hz
D.5.0 × 10 8Hz

Answer 1

Explanation :

It is given that,

Speed of the wave,
`v=3* 10^8\ m/s`

Wavelength of the wave,
`\lambda=0.6\ m`

We know that,

`v=f \lambda`

where

v is the speed of the wave

`\lambda` is the wavelength of the wave

f is the frequency of the wave

`f=(v)/(\lambda)`

`f=(3* 10^8\ m/s)/(0.6\ m)`

`f=500000000\ Hz`

or

`f=5.0* 10^8\ Hz`

So, the correct option is (d).