Physicsmedium · Past Paper
The refractive index of glass with respect to air is 3/2. What is the refractive index of air with respect to glass?
A3/2
B2/3
C1/2
D1
✓ Correct Answer: B — 2/3
n21 = 1/n12. So, 1 / (3/2) = 2/3.
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