Hydrogen gas in the atomic state is excited to an energy levels such that the electrostatic potential energy of H atom becomes -1.7 eV. Now, the photoelectric plate having Hydrogen gas in the atomic state is excited to an energy levels such that the electrostatic potential energy of H atom becomes -1.7 eV. Now the photoelectric plate having October 15, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related