Two electrons starting from rest are accelerated by equal potential difference

Options

A. they will have different kinetic energy
B. they will have same linear momentum
C. they will same linear momentum de broglie wavelength
D. they may produce x-rays of same minimum wavelength when they strike different targets

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
Linear momentum of two electron may be different, in direction but their magnitude i.e. `mv=sqrt(2mk)`
will be same. De-Broglie wavelength is given by
`lambda=h/(mv)` =same for both electrons
Minimum wavelength of produced x-rays is given by
`lambda_("min")=(hc)/(eV)` =same for both electrons