a)
using the equation
hc/ =
KEmax + Wo
Wo = ground state energy = 13.6 eV
(6.63 x 10-34) (3 x 108)/(89 x 10-9) (1/(1.6 x 10-19)) = KEmax + 13.6
KEmax = 0.37 eV
b)
as the value of "n" increases , the value of W will decrease. hence the kinetic energy of electrons will be greater than the maximum kE in that case
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