The work function of a metal is
6.6 eV.To emit a photoelectron of zero
velocity from the surface of the metal,
what should be the wavelength of the
incident radiation? (n = 6.6 x 10 "Js)
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Structure of Atom
Development Leading to Bohr's Model of Atom
The work function for a met...
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Asked on December 30, 2019 by
Brij Relangi
The work function for a metal is 4 eV . To emit a photo electron of zero velocity from the surface of the metal, the wavelength of incident light should be:
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ANSWER
hv=hv
0
+KE for zero velocity KE=0
hv=hv
0
hv=4eV
λ
hc
=4eV
λ=
4eV
h×c
=
4×1.6×10
−19
6.626×10
−34
×3×10
8
=3100A
o
Hence, the correct option is D
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