SATHEE: Optics Question 617

Optics Question 617

Question: A plano convex lens is made of glass of refractive index 1.5. The radius of curvature of its convex surface is R. Its focal length is

[RPET 2003]

Options:

A) R/ 2

B) R

C) 2R

D) 1.5 R

Show Answer

Answer:

Correct Answer: C

Solution:

$ f=\frac{R}{(\mu -1)}=\frac{R}{(1.5-1)}=2R $

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Optics Question 617

Question: A plano convex lens is made of glass of refractive index 1.5. The radius of curvature of its convex surface is R. Its focal length is

Options:

Answer:

Solution:

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