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Assertion : Even though net external force on a body is zero, momentum need not be conserved. Reason : The internal interaction between particles of a body cancels out momentum of each other. (1) If both assertion and reason are true and reason is the correct explanation of assertion. (2) If both assertion and reason are true but reason is not the correct explanation of assertion. (3) If assertion is true but reason is false. (4) If both assertion and reason are false. |
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Answer» (4) If both assertion and reason are false. |
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