Optics Question 604

Question: The radius of curvature of convex surface of a thin plano-convex lens is 15 cm and refractive index of its material is 1.6. The power of the lens will be

[MP PMT 1994]

Options:

A) +1D

B) 2D

C) +3D

D) +4D

Show Answer

Answer:

Correct Answer: D

Solution:

f=R(μ1)=15(1.61)=25cm

P=100f=10025=+4D



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