Physics > 2008 > 47
JAMB UTME
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 10-35Js]
electrons when it is illuminated by light of frequency 6.7 x 1014Hz is
[h = 6.6 x 10-35Js]
A.
1.42 x 10-19J
B.
3.00 x 10-19J
C.
4.42 x 10-19J
D.
7.42 x 10-19J
Answer: D
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