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+1 vote
1.0k views
in Physics by (74.8k points)

An equiconvex lens of focal length f, is cut into four parts as shown in the diagram. The focal length of each part is

An equiconvex lens

(1) f

(2) 2f

(3) f/2

(4) 4f

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1 Answer

+1 vote
by (73.2k points)

Correct option is : (2) 2f

\(f = \frac{R}{2(u - 1)}\) (equiconvex lens)

\(f' = \frac{R}{(\mu - 1)}\) (plans convex lens)

f’ = 2f

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