A particle of mass 
is moving in 
-plane with a uniform velocity 
with its trajectory running parallel to + ve 
-axis and intersecting 
-axis at 
as shown in figure. The change in its angular momentum about the origin as it bounces elastically from a wall at 
constant is
A
mva 
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The initial velocity is 
and after reflection from the wall, the final velocity is 
=
. The trajectory is described as position vector
Hence, the change in angular momentum
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