Question

1. Total internal reflection takes place only if [ a) light goes from optically rarer medium (smaller refractive index) to optically denser medium b) light goes from optically denser medium to rarer medium c) the refractive indices of the two media are close to each other d) the refractive indices of the two media are widely different.​

Answer 1

Explanation:

b is the answer, 100 percent sure, mark as brainlist

Answer 2

Answer:

(b) According to Snell’s Law, sin i/ sin r =μ 2/μ 1 = where r = 90º for particular incidence angle called critical angle. When the incidence angle is equal to or greater than ic , then total internal reflection occurs. It takes place when ray of light travels from optically denser medium (μ1 > μ2 ) to optically rarer medium.

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