Question

The speed of light in air is 3×10^8ms^-1 and in glass is 2×10^8ms^-1. What is the refractive index of the glass?

Answer 1

GIVEN:

speed of light (c)=3×10^8ms^-1

speed in glass(v)=2×10^8ms^-1

TO FIND:

Refractive index(u)= ?

SOLUTION:

$u \: g = \frac{c}{v } \\ u \: g = \frac{3 \times {10}^{8} }{2 \times {10}^{8} } \\ u \: g = 1.5$

I hope this helps ( ╹▽╹ )