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Given below are two statements : one is labelled as Assertion \(A\) and the other is labelled as Reason R. Assertion A :…

Q1

Given below are two statements : one is labelled as Assertion \(A\) and the other is labelled as Reason R.
Assertion A : Body ' \(P\) ' having mass \(M\) moving with speed ' \(u\) ' has head - on collision elastically with another body ' \(Q\) ' having mass ' \(m\) ' initially at rest. If \(m<<M\), Body will have a maximum speed equal to' \(2 u\) ' after collision.
Reason R : During elastic collision, the momentum and kinetic energy are both conserved. In the light of the above statements, choose the most appropriate answer from the options given below:

[JEE Main 2021, 26 Feb (Shift 1)]

a

\(A\) is correct but \(R\) is not correct.

b

\(A\) is not correct but \(R\) is correct.

c

Both \(A\) and \(R\) are correct and \(R\) is the correct explanation of \(A\).

d

Both \(A\) and \(R\) correct but \(R\) is not the correct explanation of \(A\).

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