Question

What is the speed of light in Perspex?

Answer 1

Answer:

210,000,000

Explanation:

its the speed of light in perspex.

Answer 2

Answer:

210,000,000

Explanation:

We know the speed of light in air is 300,000,000 m/p/s, so firstly work out what sine I over sine r is and you multiply 300,000,000 by what ever you work out sine I over sine r to be. E.g. if refractive index = 0.7 you would do 300,000,000 x 0.7 = 210,000,000, so speed of light in Perspex is 210,000,000.