The critical angle of a medium with respect to air is 45°. The refractive index of a medium is
A. 1.41
B. 1.2
C. 1.5
D. 2
Answer:A
The critical angle of a medium with respect to air is 45°. The refractive index of a medium is
A. 1.41 B. 1.2 C. 1.5 D. 2