Q.

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

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a

f2

b

f

c

32f

d

2f

answer is D.

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Detailed Solution

f=R2μ−1,f'=Rμ−1⇒f'=2f
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Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
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Best Books for NEET
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