A Certain Photon,after Being Scattered from a Free Electron That $\left( m _ { \text {electron } } = 9.11 \times 10 ^ { - 31 } \mathrm {~kg} , \right.$

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

A) 1.05 × $10 ^{- 16}$ J
B) 2.10 × $10 ^{- 16}$
J
C) 5.71 × $10 ^{- 16}$
J
D) 3.34 × $10 ^{- 16}$
J
E) 4.21 × $10 ^{- 16}$
J

Correct Answer:

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