Question

Which line shows the path of alpha radiation in a magnetic field?

• A. A
• B. B
• C. C
• D. D
• E. E

Answer 1

Answer: (C)

C

If magnetic field is directed ,perpendicularly inward the plane of paper then being positive , alpha particle would experience a force towards left to the line $A$ (according to Fleming's left hand rule) and as it is heavier than beta particle therefore it will be deflected less due to magnetic force and go through the line $B$ , and if the direction of magnetic field is perpendicularly outward the plane of paper , alpha particle will go through the line $C$.