Two electrons starting from rest are accelerated by equal potential difference.

Options

A. they will not have same kinetic energy
B. they will have same linear momentum
C. they will not have same de-Broglie wave length
D. None of these correct

Answer

D

Explanation

Kinetic energy of an electron is given by `k = (1)/(2) mv_(2) = eV` = same for both electron
Where V = speed of electron
V = potential difference
Linear momentum of two electron may be different in direction but their magnitude i.e `mv = sqrt(2 mk)` will be same De-Broglie wavelength is given by
`lamda = (h)/(mv)` = same for both electrons
Minimum wavelength of produced x-rays is given by
`lamda_(min) = (hc)/(eV)` = same for both electrons.