An electron of mass m and charge e, initially at rest, gets accelerated by a constant electric field e. the rate of change of de-broglie wavelength of this elec

An electron of mass m and charge e, initially at rest, gets accelerated by a constant electric field E. The rate of change of de-Broglie wavelength of this electron with time, (ignoring relativistic effects) is given by (A) mh eE eht (C) (D) (B) ek eE