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Physics · PYQ NEET UG 2016(1)
हिन्दीIf the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is
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Correct answer · Option D
\( 90^\circ \)
Explanation
Given \( |\vec{A} + \vec{B}| = |\vec{A} - \vec{B}| \implies A^2 + B^2 + 2AB \cos\theta = A^2 + B^2 - 2AB \cos\theta \implies 4AB \cos\theta = 0 \implies \theta = 90^\circ \).
