jh sir rapid revision course jee mega link
physicswallah- lakshya aims to provide the content for class 11th and 12th students at free of cost or at minimum cost.
etoos lectures allen aakash physics wallah all lectures link motion link nv sir jh sir ps air aa mam gb sir at sir mk sir nm sir rrd sir jee neet cbse
this site provided all etoos lectures in free.eg- nv sir physics,jh sir chemistry,nj sir organic ,gb sir mathematics,aa mam biology lectures etc.
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