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Let C be the circle with centre at (1, 1...

Let C be the circle with centre at (1, 1) and radius = 1. If T is the circle centered at (0, Y) passing through origin and touching the circle C externally, then the radius of T is equal to :

A

`1/2`

B

`1/4`

C

`sqrt3/sqrt2`

D

`sqrt3/2`

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The correct Answer is:
B
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