Total internal reflection can take place when light travels from:
- Diamond to glass
- Water to glass
- Air to water
- Air to glass
Explanation
Option (a) is correct
- Total internal reflection occurs when light travels from a denser medium to a rarer medium at an angle greater than the critical angle. Refractive index order: Diamond > Glass > Water > Air. Thus, total internal reflection is possible when light moves from diamond to glass.
