ICSE Class 10 Physics 2023 Solved Paper

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Question : 46
Total: 76
How is the critical angle related to the refractive index of a medium?
Solution:  
Ifaµm is the refractive index of the denser medium with respect to the rarer medium and ' c ' is the critical angle for the pair of media then the relation between them is
dµm=
1
sinC
=cosecC

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