CBSE Class 9 Mathemaics
Important Questions
Chapter 10
Circles
1 Marks Quetions
1. An angle in the semicircle is
(a) Right angle
(b)
(c)
(d) none of these
Ans. (a) Right angle
2. If the angles subtended by two chords of a circle at the centre are equal then the
chords are
(a) not equal
(b) equal
(c) angle equal
(d) line equals
Ans. (b) equal
3. How many circle passing through three non-collinear points
(a) one
(b) two
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(c) three
(d) four
Ans. (a) one
4. The constant distance is called
(a) diameter
(b) radius
(c) centre
(d) circle
Ans. b) radius
5. PS and RS are two chord’s of a circle such that PQ=10cm and RS= 24cm and PQ||RS.
The distance between PQ and RS is 17cm. Find the radius of circle
(a) 10cm
(b) 13cm
(c) 15cm
(d) none of these
Ans. (b) 13cm
6. A circle is drawn. It divides the plane into
(a) 3 Parts
(b) 4 Parts
(c) 5 Parts
(d) No Parts
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Ans. (a) 3 Parts
7. The relation between diameter and radius of a circle is
(a) r=2d
(b) d=r
(c) d=2r
(d) d=2 r
Ans. (c) d=2r
8. If P and Q are any two Points on a circle then PQ is called a
(a) diameter
(b) secant
(c) chord
(d) radius
Ans. c) chord
9. What is a diameter
(a)
(b)
(c)
(d)
Ans. (d)
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10. Two point on a circle shows the
(a) radius
(b) chord
(c) secant
(d) diameters
Ans. b) chord
11. The whole arc of a circle is called
(a) circumference
(b) semi-circle
(c) sector
(d) segment
Ans. (a) circumference
12. One half of the whole arc of a circle
(a) semi-circle
(b) circumference
(c) segment
(d) sector
Ans. (a) semi-circle
13. Circle having same centre are said to be
(a) Concentric
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(b) circle
(c) chord
(d) secant
Ans. (a) Concentric
14. The line which meet a circle in two points is called a
(a) chord of circle
(b) diameter
(c) radius
(d) secant of circle
Ans. (d) secant of circle
15. The sum of either pair of opposite angle of cyclic quadrilateral is
(a)
(b)
(c)
(d)
Ans. c)
16. Two circle are congruent if they have equal.
(a) diameter
(b) radius
(c) chord
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(d) secant
Ans. (b) radius
17. Which equation is show the diameter of circle
(a)
(b)
(c)
(d)
Ans. (a)
18. of the whole circle shows
(a) semi-circle
(b) circumference
(c) sector
(d) segments
Ans. (a) semi-circle
19. Two circle are congruent if they have equal
(a) radius
(b) diameter
(c) chord
(d) secant
Ans. (a) radius
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