If overrightarrow{ P } × overrightarrow{ Q }=overrightarrow{ Q } × overrightarrow{ P }, angle betw

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3-1.Vectors

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If $\overrightarrow{ P } \times \overrightarrow{ Q }=\overrightarrow{ Q } \times \overrightarrow{ P },$ the angle between $\overrightarrow{ P }$ and $\overrightarrow{ Q }$ is $\theta\left(0^{\circ} < \theta < 360^{\circ}\right) .$ The value of $\theta$ will be ........

A

$90$

B

$135$

C

$180$

D

$45$

(JEE MAIN-2021)

Solution

$=PQ \sin \theta$

$= PQ \sin \theta$

$\Rightarrow \theta=180^{\circ}$

Standard 11

Physics

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