Question

A vector $\vec{P_{1}}$ is along the positive x-axis. If its vector product with another vector $\vec{P_{2}}$ is zero then $\vec{P_{2}}$ could be
(a) $4\hat{j}$
(b) -$4\hat{i}$
(c) $(\hat{j} + \hat{k})$
(d) $-(\hat{i} + \hat{j})$

Answer 1

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