Question

Yellow light emitted from a Na lamp has a wavelength of 580 nm. Calculate the frequency (υ) of yellow light.

Answer 1

We know that frequency and wavelength are related by the formula:

u = c/lambda, where lambda is the wavelength

Since c is the velocity of light = 3 * 10^8 m/s, we get:

u = 3*10^8/(580nm)

= 3*10^8/(580*10^-9)

= 5.1724*10^14Hz.