Question

What is the frequency of green light with a wavelength of `530 * 10^-9` m?

Answer 1

The green light has a frequency of `5.66xx10^(14) Hz`.

Explanation:

Let's use the equation below to determine the answer.

• The speed of light has a value of approximately `3.00xx10^(8) m/s`
• The wavelength should have units of meters.
• The frequency should have units of `Hz or s^(-1)`. Hz is hertz or reciprocal seconds.

We know the value of the speed of light and we are given the wavelength. All we have to do is rearrange the equation to solve for the frequency:

`v = c/lambda`

Now just plug in the given values:

`v = (3.00xx10^(8)cancelm/s)/(530xx10^(-9)cancelm`

`v = 5.66xx10^(14) Hz`