Physics-
General
Easy
Question
The given lens is broken into four parts and rearranged as shown in the figure. If the initial focal length is f then after rearrangement the equivalent focal length is
- f
- 4f
The correct answer is:
Cutting a lens in transverse direction doubles their focal length i.e. 2f.
Using the formula of equivalent focal length
We get equivalent focal length as 
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