A plano convex lens of refractive index `mu_(1)` and focal length `f_(1)` is kept in contact with
Channel: Doubtnut
Date: 03/01/2020

A plano convex lens of refractive index `mu_(1)` and focal length `f_(1)` is kept in contact with another plano concave lens of refractive index `mu_(2)` and focal length `f_(2)`. If the radius of curvature of their spherical faces is R each and `f_(1)=2f_(2)`, then `mu_(1)` and `mu_(2)` are related as :