Question

please tell ans fast ​

Answer 1

$Refractive \: index \: of \: N = \frac{3 \times {10}^{8} }{0.6 \times {10}^{8} }$

$= \frac{3 \times 10}{6} = \frac{10}{2} = 5$

so, Refractive index of N is 5

hope it's helpful to you

Answer 2

Answer:

5

Explanation:

n=c/v

n = refractive index

c = speed of light

v = phase velocity of light

putting the value

c=3*10^8

v=0.6*10^8

=3/0.6

=30/6

=5