Physics

Problem

Estimate the wavelength at which plasma reflection will occur for a metal having the density of electrons

N \approx 4 \times 10^{27} \text{ m}^{-3}

. Taking

\epsilon_0 = 10^{-11}

and mass

m \approx 10^{-30}

, where these quantities are in proper SI units. a. 800 nm b. 600 nm c. 300 nm d. 200 nm