STANDARDPhysics-System of Particles and Rotational Motion
STANDARD Physics Conservation of Momentum Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 11
Statement-1: If there is no external torque on a body about its centre of mass, then the velocity of the centre of mass remains constant. Statement-2: The linear momentum of an isolated system remains constant.
A
Statement-1 is true, Statement-2 is true; Statement-2 is the correct explanation of Statement-1.
B
Statement-1 is true, Statement-2 is true; Statement-2 is not the correct explanation of Statement-1.
C
Statement-1 is true, Statement-2 is false.
D
Statement-1 is false, Statement-2 is true.
Correct Answer
Option A
Detailed Explanation
Both statements are true and Statement-2 correctly explains Statement-1. The absence of external torque implies that the linear momentum is conserved, which in turn means the velocity of the centre of mass remains constant.
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