400 nm light beam falls on a Ce photocathode, whose extraction work is 1.8 eV. Calculate: a) Maximum energy of photoelectrons. b) Threshold frequency. c) Discuss how the above results would change if the radiation is now 800 nm. (given: c = 3 108 m s-1 , h = 6.63 10-34 J s, e
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A 400 nm light beam falls on a Ce photocathode, whose extraction work is 1.8 eV. Calculate:
a) Maximum energy of photoelectrons.
b) Threshold frequency.
c) Discuss how the above results would change if the
(given: c = 3 108 m s-1
, h = 6.63 10-34 J s, e = 1.6 10-19 C)
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