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Byju's Answer
Standard XII
Physics
Phase Difference
If the ratio ...
Question
If the ratio of de-Broglle wavelength of a proton and an
α
−
p
a
r
t
i
c
l
e
is
1
:
3
, then
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Solution
λ
α
=
De-Broglle wave length of
α
particle
⇒
λ
ρ
=
De-Broglle wave length of proton
⇒
λ
α
=
h
√
2
m
α
k
ε
⇒
λ
ρ
t
=
h
√
2
m
ρ
k
ε
k
ε
=
kinetic energy of proton
⇒
λ
ρ
λ
α
=
h
√
2
m
ρ
k
ε
×
√
2
m
α
k
ε
h
=
√
2
m
α
k
ε
2
m
ρ
k
ε
=
√
m
α
m
ρ
=
√
4
m
ρ
m
ρ
=
√
4
1
=
2
1
=
2
:
1
Hence, the answer is
2
:
1.
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