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**Q1.A tangent PQ at a point P of a circle of radius 5 cm meets a line through the centre O at a point Q such that OQ = 12 cm. Length PQ is **

**(a) 12 cm **

**(b) 13 cm **

**(c) 8.5 cm **

**(d) `sqrt(119)cm ` **

**Q2. From a point Q, the length of the tangent to a circle is 24 cm and the distance of Q from the centre is 25 cm. The radius of the circle is **

**Q3. The length of the tangent from a point A at a circle, of radius 3 cm, is 4 cm. The distance of A from the centre of the circle is **

**Q4. If tangents PA and PB from a point P to a circle with centre O are inclined to each other at an angle of 80 ^{o} then angle POA is equal to **

**Q5. If TP and TQ are two tangents to a circle with centre O so that angle POQ = 110 ^{o}, then, angle PTQ is equal to **