A laser emits light with a wavelength of in vacuum

PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

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}

(b)

452\,\text{nm}

(c)

600\,\text{nm}

(d)

398\,\text{nm}