In the Compton Scattering experiment the X-ray wavelength change Δλ is _. Here h is Planck constant, m rest mass of electron and θ is angle after scattering.
Correct answer: C. Δλ=h/moC(1 - Cosθ)
- A. Δλ=h/moC(1+ Cosθ)
- B. λ=h/moC(1 - Cos2θ)
- C. Δλ=h/moC(1 - Cosθ)
- D. Δλ=h/moC2(1 + Cosθ)
Explanation
Option C is correct. The derivation is given below:
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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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