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Physics
Physics
Problem
Which of the following mathematical expressions gives the change in wavelength
Δ
λ
\Delta\lambda
Δ
λ
of a photon that scatters from a free electron through an angle
θ
\theta
θ
? a)
Δ
λ
=
h
m
e
c
sin
θ
\displaystyle\Delta\lambda=\dfrac{h}{m_ec}\,\sin\theta
Δ
λ
=
m
e
c
h
sin
θ
b)
Δ
λ
=
2
h
m
e
c
(
1
−
cos
θ
)
\displaystyle\Delta\lambda=\dfrac{2h}{m_ec}\,(1-\cos\theta)
Δ
λ
=
m
e
c
2
h
(
1
−
cos
θ
)
c)
Δ
λ
=
h
m
e
c
(
1
−
cos
θ
)
\displaystyle\Delta\lambda=\dfrac{h}{m_ec}\,(1-\cos\theta)
Δ
λ
=
m
e
c
h
(
1
−
cos
θ
)
d)
Δ
λ
=
h
m
e
c
(
1
+
cos
θ
)
\displaystyle\Delta\lambda=\dfrac{h}{m_ec}\,(1+\cos\theta)
Δ
λ
=
m
e
c
h
(
1
+
cos
θ
)
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