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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

`(3f)/(2)`

D

2f

Text Solution

Verified by Experts

The correct Answer is:
D
When an equiconvex lens is cut parallel to principal axis, then focal length remains the same and when the lens is cut perpendicular to principal axis, then its focal length becomes twice the original.
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