A thin plano-convex lens made of glass of refractive index 1.5 is immersed in a liquid of refractive index 1.2…

Question

A thin plano-convex lens made of glass of refractive index $1.5$ is immersed in a liquid of refractive index $1.2$ . When the plane side of the lens is silver coated for complete reflection, the lens immersed in the liquid behaves like a concave mirror of focal length $0.2 \, \text{m}$ . The radius of curvature of the curved surface of the lens is:

A
$0.15 \, \text{m}$
B
$0.10 \, \text{m}$
C
$0.20 \, \text{m}$
D
$0.25 \, \text{m}$

Accepted Answer

B. $$0.10 \, 	ext{m}$$

Answer

A. $$0.15 \, 	ext{m}$$

Answer

C. $$0.20 \, 	ext{m}$$

Answer

D. $$0.25 \, 	ext{m}$$

Answer & step-by-step solution

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