Answers

2016-02-25T11:45:35+05:30
the sunlight when passes through the raindrops.... , these raindrops acts as a small prisms and these refracts the light into seven colours VIBGYOR, which is visible to us as rainbow..........
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is there any total internal reflection here
but the answer is brainy
yaaa, the rain droplets which asts as prisms refract and disperse the incident sunlight, then reflect it internally, and finally refract it again when it comes out of the raindrop.... due to dispersion of light and internal reflection, diffent colours reach the observers eye....