Refractive Index and Snell's Law

Question 1

Refractive Index

Answer 1

A measure of the speed of light as it passes through a medium relative to the speed of light as it passes through a vacuum

Question 2

Vacuum refractive index =

Answer 2

1

Question 3

Refractive index (n) 3 formula

Answer 3

n = speed of light in vacuum / speed of light in medium
n = 1 / sin(critical angle)
n = sin(bigger angle) / sin(smaller angle)