The critical angle in air for a particular type of glass is 39.0°. what is the speed of light in this class glass? (c = 3.00 * 108 m/s

To get the speed of light in this class glass, used the following equation

v = c/n; where c is the speed of light in a vacuum and n where the index of refraction

Based on my research the index of refraction of the class glass is 1.59

Given

c = 3.00 x 10^8 m/s

n = 1.59

Solution

we will use 3.00 for c to get the speed of light in class glass cause 10^8 m/s is fixed

v = 3.00 / 1.59

v = 1.886

So the speed of light in this class glass is 1.89 x 10^8 m/s