🔬 Science & TechnologyUPSC 1996Space & Space Technology

Total internal reflection can take place when light travels from:

adiamond to glass
bwater to glass
cair to water
dair to glass
✓ Correct answer: a) diamond to glass
ExplanationTotal internal reflection occurs when light travels from a medium with a higher refractive index to a medium with a lower refractive index, and the angle of incidence exceeds the critical angle.From the given options, total internal reflection can take place when light travels from Diamond to glass.This is because diamond has a higher refractive index than glass, so when light travels from diamond to glass, it can undergo total internal reflection if the angle of incidence is greater than the critical angle.10.4 Electricity and Magnetism 272

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