In: Physics
The next three questions pertain to a certain green light that has a wavelength of 600nm is vacuum. The refractive index of a certain plastic is 1.2.
The speed of the green light in the plastic will be
Group of answer choices
1.2 x 108 m/s.
1.5 x 108 m/s.
2.0 x 108 m/s.
2.5 x 108 m/s.
3.0 x 108 m/s.