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A rod AB of length 3 units moves vertica...

A rod AB of length 3 units moves vertically with its bottom B always an the circle `x^(2)+y^(2)=25` then the equation of the locus of A is

A

`x^(2)+(y+3)^(2)=25`

B

`(x-3)^(2)+y^(2)=25`

C

`(x+3)^(2)+y^(2)=25`

D

`x^(2)+(y-3)^(2)=25`

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The correct Answer is:
D
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