A gamma-ray photon of energy 100 keV scatters off an electron at an angle perpendicular to its original direction.Calculate the de Broglie wavelength of the recoiling electron. A)13.5 $\times$ 10^-12 m B)12.4 $\times$ 10^-12 m C)14.8 $\times$ 10^-12 m D)2.4 $\times$ 10^-12 m E)9.54 $\times$ 10^-12 m

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The Answer of A gamma-ray photon of energy 100 keV scatters off an electron at an angle perpendicular to its original direction.Calculate the de Broglie wavelength of the recoiling electron. A)13.5 $\times$ 10^-12 m B)12.4 $\times$ 10^-12 m C)14.8 $\times$ 10^-12 m D)2.4 $\times$ 10^-12 m E)9.54 $\times$ 10^-12 m

A Gamma-Ray Photon of Energy 100 KeV Scatters Off an Electron