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Physics - Vectors Question with Solution | TestHub

PhysicsVectorsAddition/SubtractionEasy2 minPYQ_2016

PhysicsEasysingle choice

If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is:NEET 2016 (Phase 1)

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Answer:

Solution:

$|\vec{A} + \vec{B}| = |\vec{A} - \vec{B}|$

${\vec{A}}^{2} + {\vec{B}}^{2} + 2 |\vec{A}| |\vec{B}| \cos θ = {\vec{A}}^{2} + {\vec{B}}^{2} - 2 |\vec{A}| |\vec{B}| \cos θ$

$4 |\vec{A}| |\vec{B}| \cos θ =0$

$\cos θ = 0$

$θ = 90 °$

Stream:NEETSubject:PhysicsTopic:VectorsSubtopic:Addition/Subtraction

⏱ 2mℹ️ Source: PYQ_2016

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