There are 2 main laws of Refraction of Light
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Law 1
The Incident Ray,Refracted Ray and Normal Ray all lie on the same plane
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Law 2
The Ratio of sin of Angle of Incidence and Angle of Refraction is constant for a particular medium
This constant is called Refractive Index
It is actually called Refractive Index of the second medium with respect to the first medium.
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The second law of refraction is also called Snell's Law
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Let's do some examples
Suppose for a ray of Light. Angle of Incidence = 37Β° and Angle of Refraction = 24Β°. Find Refractive Index
(Given: sin 37Β° = 0.6 and sin 24Β° = 0.4)
A beam of light passes from air into a substance X. If the angle of incidence be 72Β° and the angle of refraction be 40Β°, calculate the refraction index of substance X.
(Given: sin 72Β° = 0.951 and sin 40Β° = 0.642 )
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