# He-Ne Laser Frequency Calculation

## Frequency Calculation

**The red light emitted by a He-Ne laser:**

Wavelength (Î») = 633 nm = 633 x 10^-9 m

Speed of light (c) = 3.00 x 10â¸ m/s

Frequency (f) can be calculated using the formula: f = c/Î»

## Explanation

**Given information:**

Wavelength (Î») = 633 x 10^-9 m

Speed of light (c) = 3.00 x 10â¸ m/s

The relationship equation between speed of light, frequency, and wavelength is c = fÎ».

To find the frequency (f), rearrange the equation to f = c/Î».

First, convert the wavelength from nanometers (nm) to meters (m) by multiplying by 10^-9 to get 633 x 10^-9 m.

Substitute the values of c = 3.00 x 10â¸ m/s and Î» = 633 x 10^-9 m into the formula: f = 3.00 x 10â¸ / 633 x 10^-9 = 4.74 x 10^14 Hz.

Therefore, the frequency of the red light emitted by the He-Ne laser is 4.74 x 10^14 Hz.