A neutral particle is initially at rest in a uniform magnetic field 
as shown in the diagram. The particle then spontaneously decays into two fragments, one with a positive charge 
and mass 3 
and the other with a negative charge 
and mass 
. Neglecting the interaction between the two charged particles and assuming that the speeds are much less than speed of light, determine the time (in 
s) after the decay at which the two fragments first meet. (use the following data 
. Both the charges have initial velocities in x‐y plane.
Text Solution
Verified by ExpertsD
Initial momentum 
of them will be same but in opposite direction.
same for both.
Let they meet at angle 
, at time 
. Then
(i)
and 
….(ii)
from (i) and (ii) 
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