A Beam of X-Rays at a Certain Wavelength Are Scattered

A beam of x-rays at a certain wavelength are scattered from a free electron that is at rest,and the scattered beam is observed at 45.0° from the incident beam.What is the change in the wavelength of the x-rays during this process? (m_electron = 9.11 × 10^-31 kg,c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s)

A) 1.75 × 10^-13 m
B) 2.76 × 10^-13 m
C) 0 m
D) 3.56 × 10^-13 m
E) 7.10 × 10^-13 m

Correct Answer:

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