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AP Physics 2/Unit 15 – Modern Physics
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Energy Conservation in Compton Scattering

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An X-ray photon with an initial energy of 50 keV scatters from a stationary electron at an angle of 90°. Which statement best explains why the scattered photon must have an energy less than 50 keV?

A

Energy is lost as heat in the scattering process

B

Energy decreases due to destructive interference

C

Energy is converted to electron’s potential energy

D

Energy is transferred to the electron’s kinetic energy

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