AAI ATC Junior Executive 2016 Shift 1 Paper

X-rays of wavelength of 0.0650 nm undergo Compton scattering from free electrons in carbon. In photons are scatted at 90° relative to the incident rays, what percentage of initial X-ray photon energy is transferred to an electron in such a scattering? (h = 6.63 × 10^-34 J s, m_e = 9.11 × 10^-31 kg, c = 3 × 10⁸ m/s)