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question_answer1)
Which of these is half of a circle?
A)
An arc done
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B)
A semicircle done
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C)
A chord done
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D)
A diameter done
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question_answer2)
How many semicircles can be drawn in a circle?
A)
1 done
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B)
3 done
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C)
2 done
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D)
Infinitely many done
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question_answer3)
O is the centre of a circle with points A and B on its circumference. Which of the following is true of 0, A and B?
A)
\[\text{OA+OB=AB}\] done
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B)
\[\text{OA=OB}\] done
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C)
\[\text{OA=2OB}\] done
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D)
\[\text{AB=}\frac{\text{1}}{\text{2}}\text{OA}\] done
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question_answer4)
Which of these instruments is used to construct a circle?
A)
B)
C)
D)
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question_answer5)
Identify the correct order of the given segments.
A)
\[\text{OPABBC}\] done
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B)
\[\text{OPBCAB}\] done
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C)
\[\text{OP=AB=BC}\] done
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D)
\[\text{BCABOP}\] done
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question_answer6)
What is an arc?
A)
A part of a protractor. done
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B)
A side of a matchbox. done
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C)
A part of a ring. done
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D)
The base a die. done
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question_answer7)
The radius of a circle is 3 cm. What is the diameter of a circle whose radius is 3 times that of the given circle?
A)
18 cm done
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B)
9 cm done
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C)
6 cm done
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D)
12 cm done
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question_answer8)
Three circles have the same Centre, 0. What are they called?
A)
Intersecting circles done
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B)
Concentric circles done
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C)
Collinear circles done
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D)
Equal circles done
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question_answer9)
Which of the following is correct?
A)
An infinite number of diameters can be drawn in a circle. done
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B)
Only a limited number of radii can be drawn in a circle. done
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C)
A circle may have infinite number of centres. done
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D)
Some of the diameters do not pass through the centre of the circle. done
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question_answer10)
Identify the incorrect statement.
A)
A chord is a line segment joining any two points on a circle. done
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B)
A diameter always passes through the centre of a circle. done
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C)
The centre of a circle lies on the circle. done
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D)
A diameter joins two opposite points on the circle. done
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question_answer11)
Which of the following are collinear points?
A)
The end points of a diameter and the centre of the circle. done
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B)
The end points of a chord and the centre of the circle. done
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C)
Any two points on the circumference of the circle. done
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D)
The point of intersection of the diameters of a circle. done
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question_answer12)
Which of these is a characteristic of concentric circles?
A)
They have the same radius and different centres. done
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B)
They have different centres and different radii. done
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C)
They have the same centre and different radii. done
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D)
They have the same centre and same radius. done
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question_answer13)
What is half the circular region called?
A)
An arc done
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B)
Circumference done
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C)
A semicircle done
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D)
A chord done
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question_answer14)
How many semicircles can be drawn in a circle?
A)
Only two done
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B)
A few done
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C)
Only one done
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D)
Infinitely many done
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question_answer15)
Which of the following is a false statement?
A)
The diameter of a circle passes through its centre. done
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B)
Infinitely many chords can be drawn in a circle. done
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C)
A semicircle is an arc of the circle. done
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D)
The line joining any two points on a circle is called its diameter. done
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question_answer16)
Identify the concentric circles.
A)
B)
C)
D)
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question_answer17)
What is the radius of a circle whose diameter is 15 cm?
A)
7 cm done
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B)
7.5 cm done
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C)
8 cm done
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D)
30 cm done
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question_answer18)
Find the diameter of a circle whose radius is 15 cm.
A)
8 cm done
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B)
7.5 cm done
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C)
30 cm done
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D)
15 cm done
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question_answer19)
Which of the following are the radii of two concentric circles?
A)
4 cm, 8 cm done
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B)
3 cm, 3 cm done
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C)
6 cm, 6 cm done
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D)
Both (b) and (c) done
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question_answer20)
Choose an example of concentric circles.
A)
B)
C)
D)
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question_answer21)
Choose the diameter of the given circle.
A)
OP done
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B)
AB done
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C)
PQ done
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D)
OB done
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question_answer22)
What is \[\overline{\text{MN}}\]called?
A)
A chord done
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B)
An arc done
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C)
A semicircle done
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D)
A diameter done
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question_answer23)
Which of the following is correct of the given circle?
A)
\[\text{MN = PQ}\] done
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B)
\[\text{OP = OQ}\] done
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C)
\[\text{MN = 2 PQ}\] done
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D)
\[\text{OM + ON = PQ}\] done
clear
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question_answer24)
Choose the correct statement.
A)
OB is an arc. done
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B)
\[\text{BC = OA + OB}\] done
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C)
\[\text{OA=}\frac{\text{1}}{\text{2}}\text{OB}\] done
clear
D)
\[\text{BC=}\frac{\text{1}}{\text{2}}\text{OA}\] done
clear
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question_answer25)
Identify the incorrect statement.
A)
AB is a diameter of the circle. done
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B)
XZ is a chord of the circle. done
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C)
OB is a chord of the circle. done
clear
D)
\[\text{AO+OB=YO+OB}\] done
clear
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question_answer26)
Which of the following is a semicircle?
A)
\[\overset\frown{\text{PXQ}}\] done
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B)
\[\overline{\text{OP}}\] done
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C)
\[\overset\frown{\text{XQ}}\] done
clear
D)
\[\overset\frown{\text{XPQ}}\] done
clear
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question_answer27)
Which of the closed figures is not formed by line segments?
A)
A square done
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B)
A triangle done
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C)
A circle done
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D)
A rectangle done
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question_answer28)
If the radius of a circle is 'a' units, which of the following is its circumference?
A)
\[\text{2 }\!\!\pi\!\!\text{ a units}\] done
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B)
\[\text{ }\!\!\pi\!\!\text{ d units}\] done
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C)
\[\text{2 }\!\!\pi\!\!\text{ d units}\] done
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D)
\[\frac{\text{2 }\!\!\pi\!\!\text{ }}{a}\text{ units}\] done
clear
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question_answer29)
What is the circumference of the given circle?
A)
\[4\pi \text{ cm}\] done
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B)
\[2\pi \text{ cm}\] done
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C)
\[\frac{\pi }{4}\text{ cm}\] done
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D)
\[\frac{\pi }{2}\text{ cm}\] done
clear
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question_answer30)
Which of the following divides a circle into two congruent parts?
A)
An arc done
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B)
A chord done
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C)
A diameter done
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D)
A radius done
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question_answer31)
Which of the following is one of the congruent parts of a circle divided by its diameter?
A)
A semicircle done
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B)
A quarter circle done
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C)
A chord done
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D)
The circular region done
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question_answer32)
If 'r' is the radius of the inner circle and 'R' is the radius of the outer circle in two concentric circles, which of the following is correct?
A)
\[\text{r=R}\] done
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B)
\[\text{rR}\] done
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C)
\[\text{rR}\] done
clear
D)
\[\text{2r=R}\] done
clear
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question_answer33)
The radius of a circle is 3 cm, what is the length of the longest chord of the circle?
A)
3 cm done
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B)
9 cm done
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C)
6 cm done
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D)
1.5 cm done
clear
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question_answer34)
The circle given has four labelled parts.
Which part of the circle does segment U represent?
A)
Arc done
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B)
Diameter done
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C)
Chord done
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D)
Radius done
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question_answer35)
'P' and 'Q' are 2 points on the circumference of the circle as shown in the figure. How many lines from 'P' and 'Q', passing through the centre of the circle can be drawn?
A)
1 done
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B)
2 done
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C)
3 done
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D)
Infinitely many done
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question_answer36)
If the diameter of a circle decreases to its \[\frac{1}{4}\], by which of the following does its radius decrease?
A)
\[\frac{1}{2}\] done
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B)
4 done
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C)
2 done
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D)
\[\frac{1}{4}\] done
clear
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question_answer37)
Which of the following statements is false?
A)
The join of any two points on a circle is the diameter of the circle. done
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B)
A diameter of a circle passes through its centre. done
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C)
A semicircle is an arc. done
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D)
The length of a circle is called its circumference. done
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question_answer38)
On which of the following does the centre of the circle lie?
A)
A diameter done
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B)
An arc done
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C)
A chord done
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D)
The circumference done
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question_answer39)
Find the radius of the Circle whose diameter is 17cm.
A)
14 cm done
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B)
8.5 cm done
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C)
10 cm done
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D)
7 cm done
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question_answer40)
What is the line segement AB in the given circle?
A)
An arc done
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B)
The perimeter done
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C)
A radius done
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D)
A diameter done
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question_answer41)
There are 4 points on the circle given. How many triangles can be drawn using any three points at a time?
A)
Only 2 done
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B)
Only 3 done
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C)
4 done
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D)
Infinitely many done
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question_answer42)
O is the centre of the given circle.
If \[\overline{\text{LO}}\text{= 3}\text{.8cm}\] then what is the measure of DE?
A)
1.9 cm done
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B)
3.8 cm done
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C)
6.7 cm done
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D)
7.6 cm done
clear
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question_answer43)
The centre of a circle is 0 and its diameter is of length 9 cm. Which of the points P, Q, R and S lies on the circle if OP = 9 cm; OQ = 4 cm; OR = 4.5 cm and OS = 6 cm?
A)
S done
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B)
R done
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C)
Q done
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D)
p done
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question_answer44)
The points P, Q, M, L, D, F and S are all 2 cm from a point O. What is the figure obtained when these points are joined using a curve? (Ruler should not be used.)
A)
A triangle done
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B)
A circle done
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C)
A polygon done
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D)
A quadrilateral done
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