Caesium has a work function of 3 x 10-19J. the maximum energy of liberated electrons when it is illuminated by light of frequency 6.7 x 1014HZ is? [h = 6.6 ...
Caesium has a work function of 3 x 10-19J. the maximum energy of liberated electrons when it is illuminated by light of frequency 6.7 x 1014HZ is?
[h = 6.6 x 1010-34Js]
Answer Details
Max kinetic energy = Energy of incident electron - work function. EK = hf - w = 6.6 x 10-34 x 6.7 x 1014 - 3 x 10-19 = 4.422 x 10-19 - 3 x 10-19 = 1.422 x 10-19J