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A biconvex lens of focal length f and ra...

A biconvex lens of focal length f and radii of curvature of both the surface R is made of a material of refractive index `n_(1)`. This lens is placed in a liquid of refractive index `n_(2)`. Now this lens will behave like

A

either as a convex or as a concave lens depending solely on R

B

a convex lens depending on `n_(1) and n_(2)`

C

a concave lends depending on `n_(1) and n_(2)`

D

a convex lens of same focal length irrespective of R, `n_(1) and n_(2)`

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