CBSE Class 12 Physics 2015 Delhi Set 1 Paper

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Question : 3
Total: 26
A concave lens of refractive index 1.5 is immersed in a medium of refractive index 1.65.
What is the nature of the lens?
Solution:  
When the refractive index of the matériel of concave lens is less than the refractive index of the surrounding medium, then the lens behaves opposite in nature i.e., convex lens.
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