What are the Laws of Refraction of Light

Laws of Refraction of Light


The incident ray, refracted ray and the normal at the point of incidence all lie in the same plane.


– The ratio of sine of angle of incidence (i) to the sine of angle of refraction (r) is constant for all rays of light from one medium to another. This constant is known as Refractive Index (u). This ratio is also equal to the ratio of the speeds of light in one medium to another.


In a public university, the cost of a semester is lower than in a private university, but there is a reason for that. In private institutions, payments go to the renovation of the library, computers, salaries for teachers and guards, the purchase of manuals and other materials for teaching. In addition, private universities take care of the comfort of students (new desks, places for recreation, landscaping, high-quality repairs).

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