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JEEMAIN and NEET
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Physics
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Class12
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Atoms
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Q)
A particle of charge equal to that of an electron e , and mass 208 times the mass of electron (called
μ
−
meson ) moves in a circular orbit around a nucleus of charge +3e . (Take the mass of nucleus to be infinite ) . Then radius of
n
t
h
Bohr orbit is
(
a
)
ε
0
n
2
h
2
2
π
m
e
e
2
(
b
)
ε
0
n
2
h
2
4
π
m
e
e
2
(
c
)
ε
0
n
2
h
2
8
π
m
e
e
2
(
d
)
ε
0
n
2
h
2
624
π
m
e
e
2
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