An electron is accelerated from rest through a potential difference of
PHYSICS · Multi-part · A Level · Physics · Particles and radiation · Particles and radiation
Problem
An electron is accelerated from rest through a potential difference of 150V. A proton is to be accelerated so that it acquires the same de Broglie wavelength as this electron.
(i) Calculate the de Broglie wavelength of the electron after acceleration through 150V. Take me=9.1×10−31kg and e=1.6×10−19C.
(ii) Determine the potential difference through which the proton must be accelerated to possess the same de Broglie wavelength. Take mp=1.67×10−27kg and e=1.6×10−19C.