Question

find the speed of light in a given transparent medium of refractive index 1.36, if speed of light on air is 3*10^8 m/s
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Answer 1

Answer:

$2.2 \times {10}^{8} \frac{m}{s}$

Explanation:

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Answer 2

Answer:

2.2 ×10^8 m/s

Explanation:

Refractive index = 1.36

speed of light = 3×10^8

we know that

ng=c/vg

vg= c/ng

vg=3×10^8/1.36

vg = 2.2×10^8