1.

A thin biconvex lens is prepared from glass of refractive index mu_2 = 3/2 . The two convex surfaceshave equal radii of 20 cm each. One of the surfaces is silvered from outside to make it reflecting. It is placed in a medium of refractive index mu_1 = 5/3.It acts as a

Answer»

Converging MIRROR
Diverging mirror
Concave mirror of FOCAL LENGTH 12.5 CM
Convex mirror of focal length 12.5cm

Answer :A::C


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