Physics

Problem

Find the wavelength of the photons emitted when an electron and a positron, initially at rest, annihilate each other. (Use

h=6.63\times10^{-34}\,\text{J s}

c=3.00\times10^{8}\,\text{m s}^{-1}

1\,\text{eV}=1.60\times10^{-19}\,\text{J}

.) a)

3.86\times10^{-13}\,\text{m}

2.43\times10^{-12}\,\text{m}

1.22\times10^{-12}\,\text{m}

2.43\times10^{-10}\,\text{m}