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Tardigrade
Question
Physics
The photoelectrons emitted from a surface of sodium metal are such that
Q. The photoelectrons emitted from a surface of sodium metal are such that
1745
236
Dual Nature of Radiation and Matter
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A
they all are of the same frequency
19%
B
they have the same kinetic energy
18%
C
they have the same de Broglie wavelength
13%
D
they have their speeds varying from zero to a certain maximum
51%
Solution:
h
v
=
W
+
K
m
a
x
The photoelectric equation refers to
K
m
a
x
.
It means
0
≤
K
≤
K
m
a
x
The kinetic energies of the emitted electrons vary from
0
to
K
m
a
x