Hello Dear,

A teacher is good or bad depends upon the performance of the students.  He has provided full course of chemistry and physics of class 11th and 12th free of cost. His lectures are perfect for making you score decent marks in Jee Advanced physics . The level of conceptual clarity he provides in his lectures is at par with the HODs of some of the premier coaching institutes, but the thing that matters is, what method you are following to watch his lectures.

Good Luck