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explain snell' law.
Asked by rajatsinghbsr19 | 26 May, 2021, 08:11: PM
answered-by-expert Expert Answer

Snell's Law: The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant for a given pair of media and for a given wavelength of light. 

begin mathsize 12px style fraction numerator sin space straight i over denominator sin space straight r end fraction equals space constant space equals straight n end style 

The constant is called the refractive index of the second medium with respect to the first medium.

The cause of refraction is the change in the speed of light as it goes from one medium to another medium.

Conditions for no refraction:

1. If the light is incident perpendicularly to the surface of the two media.

2. If the refractive index of the both the mediums is same. 

Answered by Shiwani Sawant | 26 May, 2021, 08:53: PM

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