Question

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 at time t ignoring relativistic effects is

A. −h/eEt²
B. −eEt/E
C. −mh/eEt²
D. −h/e.E

Answer 1

The rate of change of de-Broglie wavelength of an electron accelerated by a constant electric field can be calculated using the equation -h/eEt^2.

Step-by-step explanation:

The rate of change of de-Broglie wavelength of an electron accelerated by a constant electric field can be calculated using the equation:

r = -h/eEt^2

where r is the rate of change of de-Broglie wavelength, h is Planck's constant, m is the mass of the electron, e is the charge of the electron, E is the electric field strength, and t is the time.

Therefore, the correct answer is option A: -h/eEt^2.