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A plano convex lens is made of glass of ...

A plano convex lens is made of glass of refractive index `n` and `R` is radius of curvature of curved surface. Its curved surface is silvered. It behaves as

A

convex mirror of focal length `R/(2n)`

B

concave mirror of focal length `R/(2n)`

C

convex mirror of focal length `R/(2(n-1))`

D

concave mirror of focal length `R/(2(n-1))`.

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