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KEAM 2023 Physics and Chemistry Solved Paper

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Question : 8 of 120

Marks: +1, -0

A thin convex lens of refractive index 1.5 has a focal length of 10‌cm in air. When the lens is immersed in a fluid, its focal length becomes 70‌cm. The refractive index of the fluid is :

1.33
1.6
1.25
1.45
1.4

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