A a photon having e 125 kev energy scatters from a free, Ask an Expert

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a) A photon having E = 12.5 keV energy scatters from a free electron inside a metal. What is the maximum energy the electron can gain from the photon?

b) At which angle will the photon scatter with respect to its original direction? (The accepted unit abbreviations for angles are either 'deg' for degrees or 'rad' for radians.)

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