A particle of charge q and mass m moving with a velocity v along the x-axis enters the region x > 0 with uniform magnetic field B along the 
direction. The particle will penetrate in this region in the x-direction upto a distance d equal to
A
Zero
B
C
D
Infinity
Text Solution
Verified by ExpertsThe correct answer is:
B
It is easy to understand the given problem, along with the following figure.
d = radius of path
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