In this question, a statement of assertion 
is followed by a statement of reason 
. Mark the correct choice as:
Assertion: The coefficient of restitution for a perfectly elastic collision is equal to one.
Reason: In perfectly elastic collision, kinetic energy before and after the collision remains conserved.
Text Solution
Verified by ExpertsThe correct answer is:
B
According to definition of coefficient of restitution,
For an elastic collision,
velocity of separation 
velocity of approach
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