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Assertion: Two blocks A and B are connected at the two ends of an ideal spring as shwon in figure. Initially, spring was released. Now block B is pressed. Linear momentum of the system will not remain constan till the spring reaches its initial natural length. Reason: An external force will act from the wall on block A.A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.B. If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.C. If Assertion is true but Reason is false.D. If Assertion is false but Reason is true.

Answer» Correct Answer - A
Linear momentum will not remain constant till spring will remain compressed. Therefore a force will act on block A from the wall.


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