Physics

Problem

A light beam has wavelength

650\,\text{nm}

in air. On entering medium

A

its wavelength becomes

500\,\text{nm}

and after subsequently entering medium

B

it is reduced to

400\,\text{nm}

. Calculate: a. (i) the refractive index of medium

A

with respect to air b. (ii) the refractive index of medium

B

with respect to air c. (iii) the refractive index of medium

B

with respect to medium

A