A) \[\frac{\upsilon }{sd}\]
B) \[\frac{2\upsilon }{sd}\]
C) \[\frac{\upsilon }{2sd}\]
D) \[\frac{\upsilon }{4sd}\]
Correct Answer: A
Solution :
For the particle not to be collided with the wall we have centripetal force = force in magnetic field \[\frac{m{{\upsilon }^{2}}}{r}=q\upsilon B\] \[\frac{m{{\upsilon }^{2}}}{d}=s\upsilon B\] \[(\because r=d\,and\,q=s)\] \[\frac{m\upsilon }{d}=sB\] \[(\because m=1)\] \[B=\frac{\upsilon }{sd}\]You need to login to perform this action.
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