Question

Determine the wavelengths of the photons scattered at (i) 60° and (ii) 90° when X- rays of wavelength 4.5 pm are scattered from a target.

22 Jan 2025
Answer :
Word Count : 284
To determine the wavelengths of the scattered photons, we use Compton’s wavelength shift formula: \[ \lambda' - \lambda = \frac{h}{m_e c} (1 - \cos\theta) \] where: - \( \lambda' \) = wavelength of the scattered photon - \( \lambda \) = initial wavelength of the X-ray photon - \( h = 6.626 \times 10^{-34} \) J·s (Planck’s constant) - \( m_e = 9.109 \times 10^{-31} \) kg (electron mass) - \( ________ ______ ________ ______ ________ __________ _______ ________ ________.
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