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Byju's Answer
Standard XII
Chemistry
De Broglie's Hypothesis
Calculate the...
Question
Calculate the wavelength associated with an electron moving with a velocity of
10
9
c
m
/
s
.
A
0.73
∘
A
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B
0.82
∘
A
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C
0.67
∘
A
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D
1.01
∘
A
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Solution
The correct option is
A
0.73
∘
A
Given,
Velocity of electron
(
v
)
=
10
9
c
m
/
s
We know that,
Planck's constant
(
h
)
=
6.63
×
10
−
27
e
r
g
s
Mass of electron
(
m
e
)
=
9.1
×
10
−
28
g
Again,
de Broglie wavelength
(
λ
)
=
h
m
v
=
6.63
×
10
−
27
9.1
×
10
−
28
×
10
9
=
7.28
×
10
−
9
c
m
=
0.73
∘
A
Suggest Corrections
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