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MHT CET 2019 Physics Solved Paper
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© examsnet.com
Question : 9
Total: 50
Bohr model is applied to a particle of mass W and charge 'q' moving in a plane under the influence of a transverse magnetic field 'B'. The energy of the charged particle in the
n
th
level will be (h = Planck's constant)
2
nhqB
π
m
nhqB
2
π
m
nhqB
4
π
m
nhqB
π
m
Validate
Solution:
q
v
B
=
m
v
2
r
.....(i)
m
v
r
=
n
h
2
π
......(ii)
K
.
E
=
1
2
m
v
2
....(iii)
Solving (i), (ii) and (iii) we get:
K
.
E
=
1
2
r
q
v
B
=
1
2
×
q
B
×
n
h
2
π
m
=
n
h
q
B
4
π
m
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