Physicshard · Past Paper
If the refractive index of glass is 1.5 and that of water is 1.33, what is the refractive index of glass with respect to water?
A1.125
B2.0
C0.88
D1.25
✓ Correct Answer: A — 1.125
n(gw) = n(g) / n(w) = 1.5 / 1.33 ≈ 1.125.
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