Light waves are electromagnetic waves that travel at 3.00 light waves are electromagnetic waves that travel 108 m/s. the eye is most sensitive to light having a wavelength of 5.50 light waves are electromagnetic waves that travel 10-7 m.(a) find the frequency of this light wave. hz(b) find its period. s

(a)

The relationship between frequency and wavelength of an electromagnetic wave is given by

where

is the speed of light

is the frequency

is the wavelength

In this problem, we are considering light with wavelength of

Substituting into the equation and re-arranging it, we can find the corresponding frequency:

(b)

The period of a wave is equal to the reciprocal of the frequency:

And using as we found in the previous part, we can find the period of this wave: