#### Let C be the circle with centre at (1, 1) and radius = 1. If T is the circle centred at (0, y), passing through origin and touching the circle C externally, then the radius of T is equal to : Option 1) Option 2) Option 3) Option 4)

As we learnt in

Circle touching y-axis and having radius r -

- wherein

Where g is a variable parameter.

According to Pythagorus theorem,

Option 1)

This option is incorrect.

Option 2)

This option is correct.

Option 3)

This option is incorrect.

Option 4)

This option is incorrect.

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