If , , then vectors perpendicular to and…

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

\mathbf{a} = \hat{i} + \hat{j} + \hat{k}

\mathbf{b} = \hat{i} + \hat{j} - \hat{k}

, then vectors perpendicular to

\mathbf{a}

and

\mathbf{b}

is/are (1)

\lambda(\hat{i} + \hat{j})

(2)

\lambda(\hat{i} + \hat{j} + \hat{k})

(3)

\lambda(\hat{i} - \hat{j})

(4) None of these