Physics · Optics
A wave incident from a denser medium 1 is traveling into a rarer medium 2. Which of the following is true for the critical angle of incidence (ic) during total internal reflection? (where n12 is the refractive index of medium 1 with respect to 2, and n21 is the refractive index of medium 2 with respect to 1)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1sin(ic) = n12
- 2sin(ic) = 1
- 3sin(ic) = 0
- 4sin(ic) = n21✓
Correct answer
sin(ic) = n21
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