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**Q1. If angle between two radii of a circle is 130 ^{o}, the angle between the tangent at the ends of the radii is: **

**(a) 90 ^{o}**

**(b) 50 ^{o}**

**(c)70 ^{o }**

**(d) 40 ^{o }**

**Q2.If radii of two concentric circles are 4 cm and 5 cm, then the length of each chord of one circle which is tangent to the other circle is: **

**Q3.At one end a of a diameter AB of a circle of radius 5 cm, tangent XAY is drawn to the circle. The length of the chord CD parallel to XY and at a distance 8 cm from A is: **

**Q4.From a point P which is at a distance of 13 cm from the centre O of a circle of radius 5 cm, the pair of tangents PQ and PR to the circle are drawn. Then the area of the quadrilateral PQOR is: **

**Q5. If two tangents inclined at an angle of 60 ^{o} are drawn to a circle of radius 3 cm, then length of each tangent is equal to: **