Light of wavelength 600nm falls on a metal having photoelectric work function
2eV. Solve for (a) energy of photon (b) Kinetic energy of the most of energetic
photoelectron and (c) the stopping potential.
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Answer:
(a)
(b) K.E. = 0.6875 ev
(c)
Explanation:
Given, wavelength (λ) = 600 nm
and work function(Ф) = 2 eV
(a) Energy of photon(E) = (here , , and )
(b) From photoelectric effect
(E = 2.06875 ev, Ф = 2 ev)
K.E. = 0.6875 ev
(c) We know that stopping potential() =
Therefore,
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