Physics

Problem

A monochromatic light has wavelength

600\,\text{nm}

in air. Assume the speed of light in air is

3.0\times10^{8}\,\text{m\,s}^{-1}

. The light enters a glass slab of refractive index

1.5

. (a) Calculate its frequency. (b) Determine its wavelength inside the glass.