A proton and an alpha particle are accelerated through same potential difference and they enter into a region of uniform magnetic field which is perpendicular to their direction of motion. F ind the ratio of their radii of curvature.
Text Solution
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Sol. For a charged particle moving perpendicular to magnetic field,
If accelerated through potential difference 
,
Substitute in radius formula:
Hence,
For proton:
For alpha particle:
Therefore,
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