If a vector vec A is parallel to another vector vec B then resultant of vector vec A × vec B will b

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3-1.Vectors

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If a vector $\vec A$ is parallel to another vector $\vec B$ then the resultant of the vector $\vec A \times \vec B$ will be equal to

A

$A$

B

$\vec A$

C

Zero vector

D

Zero

Solution

(c) $\overrightarrow A \times \overrightarrow B = AB\sin \theta \,\hat n$

for parallel vectors $\theta = 0^\circ $ or $180^\circ $, $\sin \theta = 0$

$\therefore $ $\overrightarrow A \times \overrightarrow B = \hat 0$

Standard 11

Physics

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