If a line segment AM = a moves in the pl...

If a line segment AM = a moves in the plane XOY remaining parallel to OX so that the left end point A slides along the circle ` x^(2) + y^(2) = a^(2)` , then locus of M is

A

`x^(2) + y^(2) = 4a ^(2)`

B

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

C

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

D

` x^(2) + y^(2) - 2ax - 2ay = 0`

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The correct Answer is:

B

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