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A convex lens has a focal length f. It i...

A convex lens has a focal length `f`. It is cut into two parts along the dotted line as shown in figure. The focal length of each part will be

A

`(f)/(2)`

B

`f`

C

`(3)/(2)f`

D

`2f`

Text Solution

Verified by Experts

The correct Answer is:
D
`f=(R)/(2(mu-1)),f^(')=(R)/((mu-1))impliesf^(')=2f`
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