Which of the following interface combinations have the smallest critical angle?

Question

Quizplus · Accepted Answer

The critical angle is smallest when the difference in the refractive indices of the two media is greatest, with the light traveling from a medium of higher to lower refractive index. Diamond has a higher refractive index than ice, making the transition from ice to diamond have potentially the smallest critical angle among the given options.

Which of the Following Interface Combinations Have the Smallest Critical