The index of refraction of germanium is 5.5. The critical angle for total internal reflection, at...

Question

Question

$The index of refraction of germanium is 5.5. The critical angle for total internal reflection, at germanium/air interface is$

Answer 1

Answer #1

$\theta c= \arcsin (\frac{n1}{n2})$

n1= refration index

n2= incident index

Here, n1=1 and n2=5.5

Putting these values in above equation of Critical angle we get $\theta c= 10.45$ degrees

Answer: D) none of these

Answer 2

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