Statement 1 : In an elastic collision between two bodies, the relative speed of the bodies after collision is equal to the relative speed before the collision.
Statement 2: In an elastic collision, the linear momentum of the system is conserved.

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statement 1 and statement 2 are correct

statement 1 is wrong and statement 2 is correct

statement 1 is correct statement 2 is wrong

statement 1 and statement 2 are wrong

answer is D.

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Detailed Solution

Statement I : For an elastic collision, the coefficient of restitution = 1
$e = \frac{| v_{2} - v_{1} |}{| u_{1} - u_{2} |} \Rightarrow | v_{2} - v_{1} | = | u_{1} - u_{2} |$
$\Rightarrow$ Relative velocity after collision is equal to relative velocity before collision. But in the statement relative speed is given.
Statement II: Linear momentum remains conserved in an elastic collision. This statement is true.