A high energy photon collides elastically with a charged particle (usually an electron)., The photon "bounces away" with less energy (a longer wavelength). The process described here is known as :
A
Compton scattering
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B
The photoelectric effect
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C
X-ray production
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D
Annihilation
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E
Quantum tunneling
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Solution
The correct option is A Compton scattering Compton scattering is the scattering of a photon by a charged particle, usually an electron. It results in a decrease in energy (increase in wavelength) of the photon called the Compton effect.