Particle A of mass 
moving with velocity 
collides with another particle B of mass 
which is at rest initially. Let 
and 
be the velocities of particles A and B after collision respectively. If 
and after collision 
the angle between 
and 
is
A
B
60 
C
15 
D
Text Solution
Verified by ExpertsThe correct answer is:
D
JEE Main 2020
and 
Angle 
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