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An electron in the hydrogen atom jumps from excited state n to the ground state, wavelength so emitted illuminates a photosensitive material having work function 2·75 eV. If the stopping potential of the photoelectron is 10 V, then value of n is:

 

An electron in the hydrogen atom jumps from excited state n to the ground state, wavelength so emitted illuminates a photosensitive material having work function 2·75 eV. If the stopping potential of the photoelectron is 10 V, then value of n is:

    Grade:12

    1 Answers

    Arun
    25763 Points
    3 years ago
    Dear Santosh
     
    -13.6 +10 + 2.75 = - 0.85 = 13.6/n²
    Now on solving n =4
    Hope it helps.
     
    Regards
    Arun (askIITians forum expert)

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