Use the following equations for Questions
c = 3.0 x108m/s = ;E = h ; h = 6.626 x 10-34 J.s
E = h - h 0; E = ½ mv2 (KE of an electron) masse = 9.11 x 10-31 kg
-Chromium metal, binding energy of 7.21 x 10-19J for certain electrons, is subjected to a photon source of frequency 1.4 x 1015 s-1. If the intensity of the photon source in increased, one would expect
A) the energy of the ejected electrons to increase.
B) the energy of the ejected electrons to decrease.
C) the number of ejected electrons to increase.
D) the number of ejected electrons to decrease.
E) no change.
Correct Answer:
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