This is Dharmendra Kumar (DMR), a Mechanical Engineering Graduate from Indian Institute of Technology - Delhi (IIT-Delhi) 2005 pass out. Presently working with Multi-national Company at Noida (India).
Teaching is my passion and I am teaching students for last 12+ years. I feel happy with young kids like you and I love supporting them by providing free on-line physics notes. Let's use this blog as much as possible. You are free to ask any question related to physics and I will try to answer your question as quickly as possible.