Question

Which of the following is not due to total internal reflection of light? *

10 points

a.Brilliance of diamond

b.Mirage formation

c.Optical fibre working

d.Rainbow formation

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Answer 1

Answer⤵️⤵️

Apparent depth of the pond appears to be less than the real depth only because of refraction of light, but not because of total internal reflection. On the other hand, brilliance of diamond, formation of mirage on hot summer days and working of optical fiber are based on total internal reflection.

Answer 2

$\implies$ Rainbow formation.