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ICSE Class 10 Physics 2016 Paper

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Question : 40 of 73
Marks: +1, -0
Write a relationship between angle of incidence and angle of refraction for a given pair of media.
Solution:  
The ratio of the sine of angle of incidence ' ii ' to the sine of angle of refraction ' rr ' is constant for the pair of given media. This constant is called the refractive index.
1μ2=  sin⁡  isin⁡  r{}_1 \mu_2 = \; \frac{ \sin\; i }{ \sin\; r }
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