A -thick sheet of plastic has an index of refraction of
PHYSICS · Subjective · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A 2.0mm-thick sheet of plastic has an index of refraction of 1.60. A short laser pulse strikes the sheet perpendicularly and emerges from the far side. Calculate the additional time, compared with travel through the same distance in air, that the pulse takes to traverse the plastic. Use c=3.00×108m/s.