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JEE Main 2023 · 24 Jan · Shift 2 · numerical answer

JEE Main 2023 Physics question on Ray Optics

A convex lens of refractive index 1.5 and focal length 18cm in air is immersed in water. The change in focal length of the lens will be __________ cm.

(Given refractive index of water = 43\frac{4}{3})
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Answer: 54

[JEE Main 2023 · 24 Jan · Shift 2]

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