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Physics 21 Online
OpenStudy (anonymous):

why rain bow is circular in shape

OpenStudy (hba):

No its semi-circular.

OpenStudy (aravindg):

circular ?I thought it was arc shaped !

OpenStudy (aravindg):

Well the reason is simple .When sunlight passes through water droplets it undergoes total internal reflection .The light that comes out composes of colours which make a particular angle with our eye .This results in an arc shaped rainbow

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