If you like my work & effort then please help me complete 500 Subscribersbr br Hi, myself Sufal Kumar,br Physics Faculty. br Dear friends, viewers & students, my channel is about Physics Education. I am to concentrate mainly on JEE, NEET, CBSE & ISC in near future.br #sufalphysicsforum br #jee br #neet br #cbse12thexam br #physicsbr br Pls like, share & subscribe, if you like my educational video....