A particle is revolving in a circle of radius $r$ . Its displacement after completing half the revolution will be

π r

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2 r

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2 π r

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\frac{r}{2}

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Solution

The correct option is B $2 r$
When the particle has undergone half a revolution it is diametrically opposite from its initial position. Thus the distance between these two positions is the length of the diameter of the circle which is equal to 2r.

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A particle is revolving in a circle of radius r. Its displacement after completing half the revolution will be

The correct option is B 2rWhen the particle has undergone half a revolution it is diametrically opposite from its initial position. Thus the distance between these two positions is the length of the diameter of the circle which is equal to 2r.

A particle is revolving in a circle of radius $r$ . Its displacement after completing half the revolution will be

The correct option is B $2 r$
When the particle has undergone half a revolution it is diametrically opposite from its initial position. Thus the distance between these two positions is the length of the diameter of the circle which is equal to 2r.