At what angle made by scattered photons with x-axis , we can get the maximum value of Compton's shift?
Correct answer: D. 180°
- A. 0°
- B. 45°
- C. 90°
- D. 180°
Explanation
The maximum value of Compton's shift occurs when the scattered photons are at an angle of 180 degrees with respect to the incident direction, which means they are scattered directly backwards. (cos 180 is -1 i.e negative maximum)
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About Dawn of Modern Physics
Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
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