Question

The refractive index of glass is 1.54 and the speed of light in air is 3×10^8m/s.calculate the speed of light in glass​

Answer 1

Answer:

The refractive index of glass is 1.5. If the speed of light in a vacuum is 3 (10) 8 m/s, then what is the speed of light in glass? n=c/v.

Answer 2

Given :

Speed of light in air , c = 3 x 10 ^ 8 m / s

Refractive index of glass , ng = 1 . 54

Solution :

Speed of light in the glass ,

$v = \frac{c}{n} = \frac{3 \times {10}^{8} }{1.54} \\ \\ \: \: \: = \: 194</em><em>,</em><em>805</em><em>,</em><em>195 \\ \\ \: \: \: = \: 195 \times {10}^{6}$

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