Physics

Problem

A laser emits light with a wavelength of

600\,\text{nm}

in vacuum. When this light enters water where its speed is

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

, which of the following is the wavelength of the light inside the water? a)

798\,\text{nm}

452\,\text{nm}

600\,\text{nm}

398\,\text{nm}