JEE MainPhysicsMagneticsMCQ+4 / −1
A proton and an -particle (with their masses in the ratio of 1 : 4 and charges in the ratio of 1 : 2) are accelerated from rest through a potential difference V. If a uniform magnetic field (B) is set up perpendicular to their velocities, the ratio of the radii rp : r of the circular paths described by them will be ;
- A
- B1 : 3
- C
- D1 : 2
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