# NCERT Mathematics Class 10 Exemplar Ch 9 Circles Part 2 (For CBSE, ICSE, IAS, NET, NRA 2023)

Doorsteptutor material for CBSE/Class-10 is prepared by world's top subject experts: get questions, notes, tests, video lectures and more- for all subjects of CBSE/Class-10.

6. In Fig. 9.5, AT is a tangent to the circle with centre O such that and . Then AT is equal to

(A)

(B)

(C)

(D)

7. In Fig. 9.6, if O is the centre of a circle, PQ is a chord and the tangent PR at P makes an angle of 50° with PQ, then ∠ POQ is equal to If O is the Centre of a Circle, PQ is a Chord

(A) 100°

(B) 80°

(C) 90°

(D) 75°

8. In Fig. 9.7, if PA and PB are tangents to the circle with centre O such that then ∠ OAB is equal to

(A) 25°

(B) 30°

(C) 40°

(D) 50°

9. If two tangents inclined at an angle 60° are drawn to a circle of radius 3 cm, then length of each tangent is equal to

(A) (B) (C) (D) PQR is the Tangent to a Circle at Q Whose Centre is O

10. In Fig. 9.8, if PQR is the tangent to a circle at Q whose centre is O, AB is a chord parallel to PR and , then ∠ AQB is equal to

(A) 20°

(B) 40°

(C) 35°

(D) 45°