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Principle of Reversibility of Light

An equal conv...

Question

An equal convex lens of $υ = 1.5$ has a focal length of 20 cm in air. Now that lens kept in the medium of refractive index 3. An object is kept at distance 30 cm from the lens in the same medium. Find its image distance from the lens is :

A

24 cm

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B

12 cm

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C

10 cm

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D

None

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Solution

The correct option is B 12 cm
correct option is B.

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