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A straight rod of length 9 units slides ...

A straight rod of length 9 units slides with its ends A, B always on the X and Y-axis respectively . Then the locus of the centroid of `DeltaOAB` is :

A

`x^(2)+y^(2)=3`

B

`x^(2)+y^(2)=9`

C

`x^(2)+y^(2)=1`

D

`x^(2)+y^(2)=81`

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The correct Answer is:
B
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HIMALAYA PUBLICATION-COORDINATE SYSTEMS, LOCUS AND STRAIGHT LINES-QUESTION BANK
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