MHT CET 2024 Physics question
Concave and convex lenses are placed touching each other. The ratio of magnitudes of their power is 2 : 3. The focal length of the system is 30 cm. the focal lengths of individual lens are
Answer: (B)
Solution
Let the magnitudes of power be for the concave lens and for the convex lens. For lenses in contact, powers add: (the system is converging, so the convex lens has the larger power). Hence $ = =
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