C-08-Q187mediumsingle_mcq
If a chord of the greater of two concentric circles touches the smaller circle, the chord is—
If a chord of the greater of two concentric circles touches the smaller circle, the chord is—
- aa diameter of the greater circle
- bbisected at the point of contact
- ca tangent to the greater circle
- dparallel to the radius
ব্যাখ্যা
The radius to the point of contact is perpendicular to the chord (tangent to the inner circle), and a perpendicular from the common centre to any chord bisects it, so the chord is bisected at the point of contact.