A beam of light has wavelength in vacuum

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

Problem

A beam of light has wavelength

600\,\text{nm}

in vacuum. It enters glass of refractive index

1.5

. Which statement is correct? (a) The wavelength decreases to

400\,\text{nm}

and the frequency decreases. (b) The wavelength increases to

900\,\text{nm}

and the frequency decreases. (c) The wavelength decreases to

400\,\text{nm}

and the frequency remains the same. (d) The wavelength decreases to

300\,\text{nm}

and the frequency remains the same.