Light has a wavelength of 600 nm in a vacuum. It passes into glass, which has an index of refraction of 1.50. What is the wavelength of the light in the glass?

Question

Quizplus · Accepted Answer

The wavelength of light in a medium is given by the formula $\lambda' = \frac{\lambda}{n}$, where $\lambda'$ is the wavelength in the medium, $\lambda$ is the wavelength in vacuum, and $n$ is the index of refraction of the medium. Substituting the given values, $\lambda' = \frac{600\,nm}{1.50} = 400\,nm$.

Light Has a Wavelength of 600 Nm in a Vacuum