A particle of positive charge q and mass m enters with velocity 
at the origin in a magnetic field B ( 
) which is present in the whole space. The charge makes a perfectly inelastic collision with identical particle at rest but free to move at its maximum Y-coordinate. After collision the combined charge will move on trajectory (where r = 
) –
A
y = 
( 
)
( )
B
(X + r) 2 + (Y – r/2) 2 = r 2 /4
C
(X – r) 2 + (Y – r) 2 = r 2
D
(X – r) 2 + (Y + r/2) 2 = r 2 /4
Text Solution
Verified by ExpertsThe correct answer is:
B
The charged particle moves I a circle of radius 
qvB = 
or B = 
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