If two vectors P = i + 2mj + mk and Q = 4i - 2j + mk are perpendicular to each other. Then, the value of m will be :

If two vectors P = i + 2mj + mk and Q = 4i - 2j + mk are… — JEE Main 2023 Physics PYQ

JEE Main 2023 · 24 Jan · Shift 2

If two vectors

\vec{P} = \hat{i} + 2m\hat{j} + m\hat{k}

and

\vec{Q} = 4\hat{i} - 2\hat{j} + m\hat{k}

are perpendicular to each other. Then, the value of m will be :

Show answer

Correct option: B

[JEE Main 2023 · 24 Jan · Shift 2]

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