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ICSE Class 10 Physics 2016 Solved Paper

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Question : 40
Total: 73
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 ' i ' to the sine of angle of refraction ' r ' is constant for the pair of given media. This constant is called the refractive index.
‌1µ2=‌
sin‌i
sin‌r
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