What is the frequency of a red laser beam, with a wavelength of 670 nm, which your astronomy instructor might use to point to slides during a lecture on galaxies?

The frequency of a red laser beam is .

Explanation:

It is given that,

Wavelength of red laser beam,

We need to find the frequency of red laser beam. It can be calculated as :

So, the frequency of a red laser beam is . Hence, this is the required solution.

c) up is the direction the magnetic force is acting on the charge.