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Let the locus of the mid point of the ch...

Let the locus of the mid point of the chords of the circle `x^2+(y-1)^2=` drawn from the origin intersects the line `x+y=1` at P and Q. Then the length of PQ is

A

`(1)/(sqrt(2))`

B

`1/2`

C

1

D

`sqrt2`

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