Dual Nature Of Radiation And Matter

A photon and an electron, each of 20 eV energy, move in free space. The ratio of linear momentum of electron $\mathrm{p}_{\mathrm{e}}$ to that of photon $\mathrm{p}_{\mathrm{Ph}}, \frac{\mathrm{p}_{\mathrm{e}}}{\mathrm{p}_{\mathrm{Ph}}}$ is:

[Take speed of light $=3 \times 10^8 \mathrm{~ms}^{-1}$, charge of electron $=-1.6 \times 10^{-19} \mathrm{C}$ and mass of electron $=9 \times 10^{-31} \mathrm{~kg}$ ]