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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
Correct answer · Option D
\( 90^\circ \)
Explanation
Given \( |\vec{A} + \vec{B}| = |\vec{A} - \vec{B}| \implies A^2 + B^2 + 2AB \cos\theta = A^2 + B^2 - 2AB \cos\theta \implies 4AB \cos\theta = 0 \implies \theta = 90^\circ \).
