Question

A thin convex lens is made of two materials with refractive indices and , as shown in figure. The radius of curvature of the left and right spherical surfaces are equal. f is the focal length of the lens when . The focal length is when and . Assuming and , the correct statement(s) is/are?

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This question has multiple correct options
A

If , then

B

For and , the value of will be cm(round off to nd decimal place)

C

D

The relation between and remains unchanged if both the convex surfaces are replaced by concave surfaces of the same radius of curvature

Hard
JEE Advanced
Solution
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Correct options are A) , B) and D)





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cm.

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