A plano-convex lens of refractive index μ1 and focal length f1 is kept in contact with another plano-concave lens of refractive index μ2 and focal length f2. If the radius of curvature of their spherical faces is R each and f1 = 2f2, then μ1 and μ2 are related as

A plano-convex lens of refractive index μ1 and focal length f1 is kep

1.	A plano-convex lens of refractive index μ1 and focal length f1 is kept in contact with another plano-concave lens of refractive index μ2 and focal length f2. If the radius of curvature of their spherical faces is R each and f1 = 2f2, then μ1 and μ2 are related as
A.	3μ2 – 2μ1 = 1
B.	2μ2 – μ1 = 1
C.	2μ1 – μ2 = 1
D.	μ1 + μ2 = 3
Answer» D. μ1 + μ2 = 3

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A plano-convex lens of refractive index μ1 and focal length f1 is kept in contact with another plano-concave lens of refractive index μ2 and focal length f2. If the radius of curvature of their spherical faces is R each and f1 = 2f2, then μ1 and μ2 are related as

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