# Problem: The wavelength of red helium-neon laser light in air is 632.8 nm.What is its frequency?

###### FREE Expert Solution

Frequency, wavelength, and speed are related by

$\overline{){\mathbf{v}}{\mathbf{=}}{\mathbf{f}}{\mathbf{\lambda }}}$

Speed of light, c = 3.0 × 108 m/s

###### Problem Details

The wavelength of red helium-neon laser light in air is 632.8 nm.

What is its frequency?