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NEET UG PHYSICS MCQ: MOTION IN PLANE

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Understanding +4 | -1
Assertion: The magnitude of the resultant of two vectors Pāƒ—\vec{P} and Qāƒ—\vec{Q} is maximum (P+Q)(P+Q), when the two vectors act in the same direction and minimum (Pāˆ’Q)(P-Q), when they act in opposite directions.

Reason: The resultant of two vectors can be found by using the relation

R=P2+Q2+2PQcos⁔θR=\sqrt{P^2+Q^2+2 P Q \cos \theta}
View answer and explanation
Correct option: B
If both assertion and reason are true but reason is not
correct explanation of the assertion.
Option B (If both assertion and reason are true but reason is not correct explanation of the assertion) is correct because both the assertion about maximum and minimum resultant magnitudes and the reason stating the formula for resultant magnitude are true, but the formula doesn't directly explain the assertion.

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