define incident ray,refracted ray and emergent ray through a triangula

1.	define incident ray,refracted ray and emergent ray through a triangular glass prism
Answer» When light ray incident on the glass surface it gets refracted with some particular angle this is call angle of Refraction this can be found by using Snell law. When light ray comes out from glass it is called emergent ray and at this point I point it also get refracted by same angle as it was initially refracted.

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