Refractive Index | Physics

This lecture is about refractive index in physics. In this animated tutorial. Q: What is refractive index? Ans: The ratio of speed of light in a vacuum to the speed of light in a specific medium is called refractive index. One can also say that refractive index measures the optical density of a medium. For example, the refractive index of a glass is 1.5. It shows that the speed of light in a glass is 1.5 times slower than the speed of light in a vacuum. To learn more about refractive index, watch this animated lecture till the end. #refractiveindex #indexofrefraction #physics Subscribe my channel at:   / @najamacademy   Youtube link:    / @najamacademy   Facebook link:   / najamacademy