Question

Calculate the refractive index of glass if the speed of light in glass is 2×10^8

Answer 1

r. i. = c/v = 3x10^8/2x10^8 = 1.5

Answer 2

HOLA

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$n \: = \: \frac{speed \: of \: light \: in \: vaccum \: \: }{speed \: of \: light \: in \: medium} \\ \\ n \: = \: \frac{3 \: \times \: 10 {}^{8} }{2 \: \times \: 10 {}^{8} } = \: \frac{3}{2}$

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