A plano convex lens fits exactly in to a plano concave lens. Their plane surfaces are parallel to each other. IF the lenses are made of different materials of refractive indices mu_1 and mu_2 and R is the radius of curvature of the curved surfaces of the lenses when the focal length of the combination is

A plano convex lens fits exactly in to a plano concave lens. Their pla

1.	A plano convex lens fits exactly in to a plano concave lens. Their plane surfaces are parallel to each other. IF the lenses are made of different materials of refractive indices mu_1 and mu_2 and R is the radius of curvature of the curved surfaces of the lenses when the focal length of the combination is
Answer» `R/(mu_1-mu_2)` `(2R)/(mu_1-mu_2)` `R/(2(mu_1-mu_2))` `R/(mu_1+mu_2)` ANSWER :A