A Certain Photon, After Being Scattered from a Free Electron $120 ^ { \circ }$

question 115

Multiple Choice

A certain photon, after being scattered from a free electron that was at rest, moves at an angle of $120 ^ { \circ }$ with respect to the incident direction. If the wavelength of the incident photon is $0.591 \mathrm {~nm}$ , what is the energy of the scattered photon? (melectron $= 9.11 \times 10 ^ { - 31 } \mathrm {~kg} , c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }$ , $h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s }$ )

• A) \(4.21 \times 10 ^ { - 16 } \mathrm {~J}\)
• B) \(1.05 \times 10 ^ { - 16 } \mathrm {~J}\)
• C) \(5.71 \times 10 ^ { - 16 } \mathrm {~J}\)
• D) \(2.10 \times 10 ^ { - 16 } \mathrm {~J}\)
• E) \(3.34 \times 10 ^ { - 16 } \mathrm {~J}\)

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