Define reflection and refraction of light ?

1.	Define reflection and refraction of light ?
Answer» Reflection of Light:\xa0The phenomenon of bouncing back of light into the same medium by the smooth surface is called reflection.Refraction of Light:\xa0The bending of light at the interface of two different mediums is called the Refraction of light.\tIf the velocity of light in a medium is more, then the medium is called optical rarer.\tFor Example, air or vacuum is more optical rarer.\tIf the velocity of light in medium is less, then medium is called optical denser.\tExample, glass is more denser than air.

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