Question

What is critical angle in physics ( total internal reflection)?

Answer 1

This is the answer of our question asked

Answer 2

$\huge\textbf{Critical Angle :}$

The angle of incidence for which the angle of refraction becomes 90°.

i.e.

$\frac{sin\:i}{sin\:r}$ = μ1 ÷ μ2

If i = c1 and r = 90°

Therefore,

$\frac{sin\:C}{sin\:90°}$ = 1 ÷ μ

Now sin 90° = 1

So,

sin C = 1 ÷ μ

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