Question

The radii of two concentric circles with centre \(O\) are \(10\) cm and \(6\) cm. If chord \(AB\) of the larger circle is tangent to the smaller circle, then the distance (in cm) of chord \(AB\) from centre \(O\) is

• A. 4
• B. 6
• C. 8
• D. 10

Hint:

For concentric circles:
• If a chord of the larger circle is tangent to the smaller circle, then \[ \boxed{\text{Perpendicular distance from the centre to the chord}=\text{Radius of the smaller circle}.} \]

Answer 1

The Correct Option is B