If \overrightarrow{ {\F} is the force acting on a particle having position vector \overrightarrow{r} and \overrightarrow{\tau} be the torque of this force about the origin, then :

Correct Answer is : →r⋅→τ=0 and →F⋅→τ=0

\overrightarrow{ {\r} \cdot \overrightarrow{\tau}=0 and \overrightarrow{ {\F} \cdot \overrightarrow{\tau} \neq 0

\overrightarrow{ {\r} \cdot \overrightarrow{\tau} \neq 0 and \overrightarrow{ {\F} \cdot \overrightarrow{\tau}=0

\overrightarrow{ {\r} \cdot \overrightarrow{\tau}>0 and \overrightarrow{ {\F} \cdot \overrightarrow{\tau}

\overrightarrow{ {\r} \cdot \overrightarrow{\tau}=0 and \overrightarrow{ {\F} \cdot \overrightarrow{\tau}=0

AIPMT 2009 Physics and Chemistry Paper

Question : 11 of 100

Marks: +1, -0

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is the force acting on a particle having position vector

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and

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be the torque of this force about the origin, then :

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