Question

n1=1.00
n2=3.14
i=60 degrees
r=16 degrees
Air to wafflecheese
Whats the speed of light in wafflecheese

Answer 1

The speed of ligh is expressed through given refractive indicex as following:

$$\dfrac{c_{vacuum}}{c_{wafflecheese}} = n_2$$

where $c_{vacuum} = 3\times 10^8 m/s$ is the speed of light in vacuum and $n_2 = 3.14$ is the refractive index of wafflecheese. Thus, obtain:

$$c_{wafflecheese} = \dfrac{c_{vacuum}}{n_2}=\dfrac{3\times 10^8m/s}{3.14} \approx 0.96\times 10^8m/s$$

Answer. $0.96\times 10^8m/s$.