An electron is moving initially with velocity `v_o hati+v_ohatj` in uniform electric field `vec E=-E_0 hatk`. If initial wavelength of electron is `lambda_0` and mass of electron is m. Find wavelength of electron as a function of time.

Options

A. `lambda_0/sqrt(1+(e^2E^2)/(m^2v_0^2)t^2)`
B. `lambda_0/sqrt(2+(e^2E^2)/(m^2v_0^2)t^2)`
C. `(lambda_0mv_0)/(eE_0t)`
D. `(2lambda_0mv_0)/(eE_0t)`

Answer

A

Explanation

NA