Question

A biconvex lens has a focal length 2/3 times the radius of curvature of eitrher sides cal;culate its ri

Answer 1

Answer:

Step-by-step explanation:

Final Answer : 7/4

Assuming surrounding medium is air or vacuum.

Steps:

1) Radius of Curvature , R(1) = R (say)

Radius of Curvature, R(2) = -R

n - > refractive index of lens.

f = 2R/3 (given)

2) By Lens Makers Formula,

Hence, Refractive Index of Lens is 7/4.

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