Question

If the velocity of light in a medium is 1.2×10^8m/s and in the air is 2.99×10^8m/s Find the refractive index of material.​

Answer 1

Answer:

$v \: = \frac{c}{u} \\ u = \frac{c}{v} = \frac{3 \times {10}^{8} }{1.2 \times {10}^{8} } \\ refractive \: index \: = 2.5 \: approx$

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