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QJEEAdv07Ph4df1: JEE Advanced 2007 Physics - Class 11 JEEAdv07Ph4df1 Solution: STATEMENT 1 If there is no external torque on a body about its…
STATEMENT 1
If there is no external torque on a body about its center of mass, then the velocity of the center of mass remains constant.
Because
STATEMENT 2
The linear momentum of an isolated system remains constant.
Multiple Choice Options
- A Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
- B Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
- C Statement-1 is True, Statement-2 is False.
- D Statement-1 is False, Statement-2 is True.
Step-by-Step Verified Solution
Statement 1 : For velocity of centre of mass remains constant, net force acting on body must be zero. Therefore the statement 1 is false.
Statement 2 : The linear momentum of an isolated system remains constant. The statement is true.