Law of Refraction using Huygen's Principle (part 1 of 10.3)

Law of Refraction using Huygen's Principle (part 1 of 10.3)

How to prove Snell's law using Huygen's wave picture of light? This is the Question we have tried to address in this video. ‪@SandeepKumarPhysics‬ ‪@PW-NEETWallah‬