Question

The velocity of light in air is 3.0 × 10⁸ ms^-1. The velocity of light in glass is 1.9 × 10⁸ ms^-1.Calculate the refractive index of glass.

Answer 1

Answer

According to snell's law

$\frac{n_2}{n_1}=\frac{v_2}{v_1}$

By putting value

$\frac{n_2}{1}=\frac{3\times10^8}{1.9\times10^8}\\n_2=1.5$