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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 15 - Properties of Matter > The electron in the hydrogen atom jumps form excited state (n=3) to its ground state (n=1) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1eV, the stopping potential is estimated to be:

The electron in the hydrogen atom jumps form excited state (n=3) to its ground state (n=1) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1eV, the stopping potential is estimated to be:

electron makes transition from n=4 to n=1 level. Recoil momentum of the H atom will be In hydrogen atom