Physics-
General
Easy
Question
An equiconvex lens is cut into two halves along (i) 
and (ii) 
as shown in the figure. Let 
be the focal lengths of completes lens, of each half in case (i), and of each half in case (ii), respectively. Choose the correct statement from the following.
= 2 f a n d f " = f '/>
= f and f " = f '/>
= 2 f and f " = 2 f '/>
= f and f " = 2 f '/>
The correct answer is:
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