CBSE Class 10 Answered
explain the second rule of refraction of light in easy language
Asked by Ratnesh | 30 Dec, 2016, 12:07: PM
Expert Answer
The second rule of refraction gives that the ratio of sine of the angle of incidence to the sine of the angle of refraction is a constant for a given pair of media.
Now this rule means that when angle of incidence changes, the angle of refraction also changes but that change is such that when you take sin of both the angles and then divide them you get a value say x. Now, when the angle changes and then you divide them again the ratio will automatically come to be equal to x. So, we can confirm that ratio of sin of the angle of incidence and angle of refraction is a constant. Now, that constant will given the name as "refractive index".
Answered by Romal Bhansali | 31 Dec, 2016, 02:51: PM
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