Given${\rm{\vec P}}{\rm{.\vec Q}} = 0\,then\,\left| {{\rm{\vec P}} \times {\rm{\vec Q}}} \right|\,is$

$\left| {{\rm{\vec P}}} \right|\left| {{\rm{\vec Q}}} \right|$

NEET UG PHYSICS MCQ: MOTION IN PLANE

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Application +4 | -1

Given

\mathrm{\vec P}\mathrm{.\vec Q} = 0\,then\,\left| {\mathrm{\vec P} \times \mathrm{\vec Q}} \right|\,is

View answer and explanation

Correct option: A

\left| {\mathrm{\vec P}} \right|\left| {\mathrm{\vec Q}} \right|

Option A (

\left| \mathrm{\vec P}} \right|\left| \mathrm{\vec Q}} \right|

) is correct because if the dot product of two vectors is zero, they are perpendicular, and the magnitude of their cross product is the product of their magnitudes.

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