Question

please answer.............​

Answer 1

$\huge\bigstar\underline\pink{Answer}$

★ Refrective index is simply defined as Ratio of speed of light in vaccum to speed of light in specific medium

★ given,

mu = 1.7

speed of light in vaccum = 3 ×10^8

so, speed of light in ruby will be =

=> 3 × 10^8 / 1.7

=> 1.76 × 10^8✔️

happy to help!

☺️