Question

Calculate the frequency of light traveling through space that has a wavelength of 4.5 x 10^5

Answer 1

666.7 Hz

Step-by-step explanation:

Light is an example of electromagnetic wave. Electromagnetic waves consist of oscillations of electric and magnetic fields that propagate through space. They are transverse waves, and they all travel through a vacuum at a speed of

`c=3.0\cdot 10^8 m/s`

called speed of light.

The relationship between frequency and wavelenght for an electromagnetic wave is given by the equation:

`c=f\lambda`

where

f is the frequency of the wave

`\lambda` is its wavelength

In this problem, the light wave has a wavelength of

`\lambda=4.5\cdot 10^5 m`

Therefore, by using the equation above, we can find its frequency:

`f=(c)/(\lambda)=(3.0\cdot 10^8)/(4.5\cdot 10^5)=666.7 Hz`