AIPMT 2007 Physics and Chemistry Paper

In a mass spectrometer used for measuring the masses of ions, the ions are initially accelerated by an electric 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:-