For silver metal, threshold frequency is 1.13 X 1017-1
What is the maximum energy of the photoelectrons
produced by shining ultraviolet light of wavelength
1.5 nm on the metal ?
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Explanation:
We know that,
v
=
c
λ
=
3
×
10
8
m s
−
1
15
×
10
−
10
m
=
2
×
10
17
s
−
1
Applying Einstein's Photoelectric Equation,
K
.
E
.
=
h
v
−
h
v
o
=
h
(
v
−
v
o
)
=
6.626
×
10
−
34
(
2
×
10
17
−
1.12
×
10
17
)
=
5.8
×
10
−
17
J
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