Physics, asked by victi4532, 1 year ago

Double convex lens is made of a glass of refractive index 155, with both faces of the same radius of curvature. Find the radius of curvature required, if the focal length is 20 cm.

Answers

Answered by winnieb

0

f=r/2

r=2f

r=2×20

r=40cm

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