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A convex lens made of glass of refractive index 1.5 is immersed in a liquid. If the focal length of the lens when immersed in the liquid is twice its focal length when it is in air, then the refractive index of the liquid is
A convex lens made of glass of refractive index 1.5 is immersed in a liquid. If the focal length of the lens when immersed in the liquid is twice its focal length when it is in air, then the refractive index of the liquid is
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If a lens is immersed in a medium with refractive index closer to its own, its focal length increases (power decreases).
Updated On: Mar 31, 2026
- 1.6
- 1.4
- 1.2
- 1.3
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The Correct Option is C
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