question_answer

The eye can be regarded as a single refracting surface. The radius of curvature of this surface is equal to that of cornea (7.8 mm). This surface separateds two media of refractive indices 1 and 1.34. Calculate the distance from the refracting surface at which a parallel beam of light will come to focus- [JEE Main 10-Jan-2019 Evening]

A) 2 cm

B) 3.1 cm

C) 4.0 cm

D) 1 cm

Correct Answer: B

Solution :

[b]