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Protons and alpha particles are both accelerated by the same potential V and they then enter...

Protons and alpha particles are both accelerated by the same potential V and they then enter the same magnetic field B. the mass of an alpha particle is four times the mass of a proton and the charge of the alpha particle is twice the charge of the proton what is the ratio of the radii (rα/rp) in which the two particles travel inside the magnetic field?

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In this question we have to find the ratio of radius of alpha particle and proton in the magnetic field.

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