Q. 13

Two neutral particles are kept 1m apart. Suppose by some mechanism some charge is transferred from one particle to the other and the electric potential energy lost is completely converted into a photon. Calculate the longest and the next smaller wavelength of the photon possible.

Answer :

if we assume q charge appear on the particle then the potential energy between them is =.

Where, r is the distance between two particles. (r=1m)


The energy between particles is transferred into photon form.




For wavelength to maximum the charge should be electronic charge


e =


Maximum wavelength is


=


=863m.


Next shortest wavelength is


λ =


=


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