A planet is revolving round the sun in a...

A planet is revolving round the sun in an elliptical orbit, If v is the velocity of the planet when its position vector from the sun is r, then areal velocity of the planet is

`1/2(vecrxxvecv)`

`vecrxxvecv`

`vecvxxvecr`

`1/2(vecvxxvecr)`

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