In Compton's effect the wavelength of the scattered X-rays is
Correct answer: C. larger than the incident photon
- A. less than the incident photon
- B. less than the scattered electron
- C. larger than the incident photon
- D. larger than the scattered electron
Explanation
Compton's effect describes the scattering of X-rays by free electrons, where the incident X-ray photon transfers part of its energy and momentum to the electron. As a result, the photon scatters at a different angle with a longer wavelength than the original photon, known as the Compton shift. Therefore, the scattered X-rays have a larger wavelength than the incident photon, making Option C the correct choice.Option A is incorrect because the scattered X-rays have a longer, not shorter, wavelength than the incident photon. Options B and D are incorrect because they incorrectly attempt to compare the scattered X-ray's wavelength with the scattered electron, which doesn't share the same wavelength-based properties due to its particle nature.
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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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