Question

For the circle x2 + y2 – 2x – 6y + 1 = 0 the chord of minimum length and passing through (1, 2) is of length-

• A. 2$\sqrt{2}$
• B. 4$\sqrt{2}$
• C. 6$\sqrt{2}$
• D. 8$\sqrt{2}$

Answer 1

Answer: (B)

4$\sqrt{2}$

Answer 2

Length of the chord = 2$\sqrt{r^{2} - p^{2}}$ = l

lminimum = pmaximum