The refractive index of a medium relative to air is 1.8. Calculate the critical angle for the medium to the nearest degree.
A
18o
B
34o
C
45o
D
68o
E
90o.
Verified Correct Answer: B.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #25229)