In two concentric circles, a chord of larger circle which is to smaller circle is bisected at the point of contact.

1. secant

2. tangent

3. chord

4. diameter

The length of the tangent drawn to a circle of radius 8 cm, from a point which is at a distance of 10 cm from the centre of the circle is :

1. 6 cm

2. 7 cm

3. 9 cm

4. 2 cm

If two tangents are drawn from an external point to a circle, then the tangents are equally inclined to the line joining the point and the centre of the circle, i.e., the centre lies on the of the angle between the two tangents.

1. perpendicular

2. bisector

3. perpendicular bisector

4. none of these

From a point M, the length of the tangent to a circle is 24 cm and the distance of M from the centre is 25 cm. The radius of the circle is :

1. 7 cm

2. 12 cm

3. 24.5 cm

4. 12.5 cm