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CBSE XII
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Physics
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Dual nature of radiation and matter
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Q)
Find the de-Broglie wavelength of a neutron , in thermal equilibrium with matter, having an average kinetic energy of
3
2
k
T
at
300
k
.given :
h
=
6.63
×
10
−
34
J
s
,
m
n
=
1.675
×
10
−
27
k
g
;
k
=
1.8
×
10
−
23
J
K
−
1
1.45
×
10
10
m
1.45
×
10
−
10
m
1.45
×
10
26
m
1.45
×
10
−
20
m
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