In a mass spectrometer used for measuring the masses of ions, the ions are initially accelerated by an ele. potential V and then made to describe semicircular paths of radius R using a magnetic field B.If V and B are kept constant, the ratio Charge on the ion /mass of the ion will be proportional to.
Options:
(a) `1/R^2`
(b) `R^2`
(c) R
(d) `1/R`