What will be the ratio of specific charge of an alpha particle to that of proton?
Answer & explanation
Correct answer: option 2
The specific charge is given by e/m.
The specific charge of photon = e/mp ........(1)
Mass of an alpha particle = 4mp
Charge of alpha particle = 2 × charge of single protons = 2e
The specific charge of alpha particle = 2e/4mp = e/2mp ......(2)
So from (1) and (2), the ratio will be 1:2