1.

(A) : In rolling, all points of a rigid body have the same linear speed. (R) : The rotational motion donot change the linear velocity of rigid of rigid body.

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Both 'A' and 'R' are true 'R' is the CORRECT EXPLANATION of 'A'
Both 'A' and 'R' are true 'R' is not the correct explanation of 'A'
A' is true and 'R' is FALSE
A' is false and 'R' are true

Answer :D


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