Circles · JEE Main previous year questions

2014 1 question

1. Q242014 · 6 Apr 2014 · Shift 1

   Let $C$ be the circle with centre at $(1,1)$ and $\text{radius}=1$. 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 :

   1. A.$\frac{1}{2}$
   2. B.$\frac{1}{4}$
   3. C.$\frac{\sqrt{3}}{\sqrt{2}}$
   4. D.$\frac{\sqrt{3}}{2}$
   Show answer

   Answer: B