Question

if the refractive index of air with respect to glass is 1/3 & that of diamond w.r.t. to air is 7/5 then the refractive index of diamond w.r.t. glass will be ?

Answer 1

R(ag) = 1/3

g/a = 1/3

R(da) = 7/5

a/d = 7/5

g/a * a/d = 1/3 * 7/5

= 7/15