Question
Physics Question on Light - Reflection and Refraction
The refractive index of glass with respect to air is 2. The critical angle at their interface is
A
90°
B
60°
C
45°
D
30°
Answer
30°
Explanation
Solution
The correct option is (D): 30°
The refractive index of glass with respect to air is 2. The critical angle at their interface is
90°
60°
45°
30°
30°
The correct option is (D): 30°