Question

if refractive index of glass is 3/2.then find the speed of the light in glass (speed of light in vaccum is 3×10 to the power of 8 m/s)​

Answer 1

Speed of light in glass = 2×10^8 m/s

${ \mu} \: = \frac{c}{v} \\ \\ \frac{3}{2} = \frac{3 \times {10}^{8} }{v} \\ \\ v = \frac{3 \times {10}^{8} \times 2}{3} \\ \\ v = 2 \times {10}^{8} m {s}^{ - }$