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Physics · PYQ NEET UG 2020
हिन्दीFind the torque about the origin when a force of \( 3\hat{j}\text{ N} \) acts on a particle whose position vector is \( 2\hat{k}\text{ m} \).
Correct answer · Option 2
\( -6\hat{i}\text{ Nm} \)
Explanation
Torque \( \vec{\tau} = \vec{r} \times \vec{F} = (2\hat{k}) \times (3\hat{j}) = 6(-\hat{i})\text{ Nm} = -6\hat{i}\text{ Nm} \).
