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Standard XII
Physics
Question
The wavelength of the de-Broglie wave associated with a thermal neutron of mass
m
at absolute temperature
T
is given by:
(
k
is the Boltzmann constant)
h
√
m
k
T
h
√
2
m
k
T
h
√
3
m
k
T
h
2
√
m
k
T
A
h
√
m
k
T
B
h
√
3
m
k
T
C
h
√
2
m
k
T
D
h
2
√
m
k
T
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Solution
Verified by Toppr
The kinetic energy of the thermal neutron of mass m at absolute temperature T is given by
m
v
2
2
=
k
T
⇒
p
=
m
v
=
√
2
m
k
T
The wavelength of the deBroglie wave associated with the thermal neutron is
λ
=
h
/
p
=
h
√
2
m
k
T
.
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Q1
The wavelength of the de-Broglie wave associated with a thermal neutron of mass
m
at absolute temperature
T
is given by:
(
k
is the Boltzmann constant)
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