Question

which refractive indices should i remember for board exams???
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Answer 1

Refractive index of glass and water .........

Answer 2

Hello

Generally these are given in the question but in case not then follow these .

The Learn Must refractive Indices ( w.r.t air ) are

1. Water = $\frac{4}{3} = 1.33$
2. Typical crown glass = $\frac{3}{2}= 1.50$
3. Oil = 1.46
4. Mercury = 3.02

Some more refractive index :

1. Of glass w.r.t water = $\frac{8}{9} = 0.88$
2. Of oil w.r.t water = 1.09

Hope you find this answer helpful .

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