Foundation
Physics Foundation
refraction from lens
Question
If the refractive index of diamond with respect to air is 2.42, then the refractive index of air with respect to diamond is :
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Solution
The refractive index of medium 2 with respect to medium 1 (n21) is the ratio of the speed of light in medium 1 to the speed of light in medium 2. It is also the reciprocal of the refractive index of medium 1 with respect to medium 2 (n12).
Given: ndiamond, air = 2.42
Therefore, nair, diamond = 1 / ndiamond, air = 1 / 2.42
Let's calculate this value: 1 / 2.42 ≈ 0.413
Final Answer: 0.41