JEE Main 2003PhysicsRotational MotionTorqueeasyMCQ

JEE Main 2003 — Rotational Motion Question with Solution

From: AIEEE 2003

Question

Let be the force acting on a particle having position vector and be the torque of this force about the origin. Then

Choose an option

Show full solutionCorrect option: D
Correct answer
D and

Step-by-step explanation

AIEEE 2003 Physics - Rotational Motion Question 230 English Explanation
As we know

So the angle between and is and the angle between and is also

We also know that the dot product of two vectors which have an angle of between them is zero.

and

Therefore is the correct option.

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About this question

This is a previous-year question from JEE Main 2003, covering the Rotational Motion chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.