Mumbai, Sept. 8 -- PhysicsWallah Ltd, one of India's largest edtech platforms, has filed an updated draft red herring prospectus (DRHP) with the Securities and Exchange Board of India (Sebi) for an initial public offering (IPO) of Rs.3,820 crore. The offering will comprise a fresh issue of Rs.3,100 crore and an offer for sale (OFS) of Rs.720 crore by its promoters. The OFS will see founders Alakh Pandey and Prateek Maheshwari (mentioned as Prateek Boob in official filings) sell up to Rs.360 crore worth of shares each. With the fresh capital raise, Physics Wallah plans to use IPO proceeds to open new offline centres (Rs.460 crore), cover lease costs (Rs.548 crore), invest in subsidiaries such as Xylem and Utkarsh (Rs.470 crore), build cloud ...