Optics Question 967

Question: For total internal reflection to take place, the angle of incidence i and the refractive index $ \mu $ of the medium must satisfy the inequality

[MP PET 1994]

Options:

A) $ \frac{1}{\sin i}<\mu $

B) $ \frac{1}{\sin i}>\mu $

C) $ \sin i<\mu $

D) $ \sin i>\mu $

Show Answer

Answer:

Correct Answer: A

Solution:

For total internal reflection i > C

$ \Rightarrow \sin i>\sin C\Rightarrow \sin i>\frac{1}{\mu }\Rightarrow \frac{1}{\sin i}<\mu . $



NCERT Chapter Video Solution

Dual Pane