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Question
Physics
The de-Broglie wavelength of an electron of speed 0.5 km s -1 is
Q. The de-Broglie wavelength of an electron of speed
0.5
km
s
−
1
is
2630
165
Dual Nature of Radiation and Matter
Report Error
A
1.5
×
1
0
−
6
m
52%
B
1.5
×
1
0
−
8
m
17%
C
1.5
×
1
0
−
10
m
20%
D
1.5
×
1
0
−
12
m
11%
Solution:
λ
=
p
h
=
m
v
h
⇒
λ
=
(
9.1
×
1
0
−
31
k
g
×
500
m
s
−
1
)
6.6
×
1
0
−
34
J
s
=
1.5
×
1
0
−
6
m