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Photoelectrons are emitted when 400nm radiation is incident on a surface of work function 1.9 eV. These photo electrons pass through a region containing - particles. A maximum energy electron combines with - particle to form a He + ion, emitting a single photon in this process. He + ionthus formed are in their fourth exited state. h= 4.14x 10-15 eVs. --What is the energy of photon lying in the 2 to 4 eV range that are likely to be emitted during and after the combination?


Photoelectrons are emitted when 400nm radiation is incident on a surface of work function 1.9 eV. These photo electrons pass through a region containing - particles. A maximum energy electron combines with - particle to form a He+ ion, emitting a single photon in this process. He+ ionthus formed are in their fourth exited state. h= 4.14x 10-15 eVs.  
--What is the energy of photon lying in the 2 to 4 eV range that are likely to be emitted during and after the combination?


Grade:upto college level

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