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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:

Santosh , 6 Years ago
Grade 12
anser 1 Answers
Arun

Last Activity: 6 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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