If light of wavelength of maximum intensity emitted from surface at temperature $T_{1}$ is used to cause photoelectric emission from a metallic surface, the maximum kinetic energy of the emitted electron is 6 ev, which is 3 times the work function of the metallic surface. If light of wavelength of maximum intensity emitted from a surface at temperature $T_{2}$ $(T_{2} = 2 T_{1})$ is used, the maximum kinetic energy of the photoelectrons emitted is

Question

Infinity Learn · Accepted Answer

from Wien's displacement law if  absolute temperature becomes double wavelength becomes halved i.e frequency or energy becomes doublefor the first case   hν $$=2$$ $$+6$$   as it is given workfunciton is $$6/3$$ $$=2$$⇒hν$$=8for$$ the second case  $$16$$  $$=$$ $$2$$ $$+$$ $$KK=$$ $$14$$

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