a) In Rutherford scattering experiment draw the trajectory traced by alpha particle in the coulomb field of target nucleus and - Physics - Atoms

Question

a) In Rutherford scattering experiment draw the trajectory traced
by alpha particle in the coulomb field of target nucleus and
explain how this led to estimate size of the nucleus
b) estimate the ratio of de-Broglie wavelengths associated with
deuterons and alpha particles when they are accelerated through the
same accelerating potential V

Sanjay Singh · Accepted Answer

Dear student

1)most of the alpha partices passed undeflected which suggest that most of the space in the atom is empty 2) some of the alpha particles passing close to the nucleus show large deflection and few retrace their path and as they are dense and positively charged so there must be a large positive charge present at thecentre responsible for their deflection wavelength associated with charge particle acceleratedby potential difference of V volt is λ=h2mqVλdeutronλalpha=malphaqalphamdeutronqdeutron=4×22×1=2 (malphamdeutron=42 and qalphaqdeutron=21)Regards