Important Questions: Circles - Class 10 MCQ

# Important Questions: Circles - Class 10 MCQ

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## 10 Questions MCQ Test Mathematics (Maths) Class 10 - Important Questions: Circles

Important Questions: Circles for Class 10 2024 is part of Mathematics (Maths) Class 10 preparation. The Important Questions: Circles questions and answers have been prepared according to the Class 10 exam syllabus.The Important Questions: Circles MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Important Questions: Circles below.
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Important Questions: Circles - Question 1

### If angle between two radii of a circle is 130°, the angle between the tangents at the ends of the radii is

Important Questions: Circles - Question 2

### In the given figure, AB and AC are tangents to the circle with centre O such that ∠BAC = 40°, then ∠BOC is equal to

Detailed Solution for Important Questions: Circles - Question 2

∠ABO + ∠BOC + ∠OCA + ∠BAC = 360°
⇒ 90° + ∠BOC + 90° + 40° = 360°
⇒ ∠BOC = 360° - 220° = 140°

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Important Questions: Circles - Question 3

### In Fig. 8.5, PQ is a chord of a circle and PT is the tangent at P such that ∠QPT = 60°. Then ∠PRQ is equal to

Detailed Solution for Important Questions: Circles - Question 3

Important Questions: Circles - Question 4

In the given figure, point P is 26 cm away from the centre O of a circle and the length PT of the tangent drawn from P to the circle is 24 cm. Then the radius of the circle is

Detailed Solution for Important Questions: Circles - Question 4

∵ OT is radius and PT is tangent
∴ OT ⊥ PT
Now, in ΔOTP,
OP2 = PT2 + OT2
⇒ 262 = 242 + OT2
⇒ 676 - 576 -OT2
⇒ 100 = OT2 ⇒ 10 cm = OT

Important Questions: Circles - Question 5

In Fig. 8.6, if PA and PB are tangents to the circle with centre O such that ∠APB = 50°, then ∠PAB is equal to

Detailed Solution for Important Questions: Circles - Question 5

In triangle PAB
∠A+∠B+∠P=180
x+x+50=180 [ if tangents are drawn from same point then they are equal so PAB is a isoceles triangle ]
2x=130
x=65

Important Questions: Circles - Question 6

A line through point of contact and passing through centre of circle is known as

Important Questions: Circles - Question 7

The length of the taragent drawn from a point 8 cm away from the centre of a circle of radius 6 cm is

Detailed Solution for Important Questions: Circles - Question 7

Important Questions: Circles - Question 8

C (O, r1) and C (O, r2) are two concentric circles with r1 > r2. AB is a chord of C (O, r1) touching C (O, r2) at C then

Detailed Solution for Important Questions: Circles - Question 8

∵ AB touches
C(O, r2)
∴ OC ⊥ AB
Also, perpendicular from the centre to a chord bisects the chord.
∴ AC = BC

Important Questions: Circles - Question 9

In Fig. 8.9, if ∠AOB = 125°, then ∠COD is equal to

Important Questions: Circles - Question 10

Two parallel lines touch the circle at points A and B respectively, If area of the circle is 25πcm2, then AB is equal to

Detailed Solution for Important Questions: Circles - Question 10

Let radius of circle = R
∴ πR2 = 25π
⇒ R = 5cm
∴ Distance between two parallel tangents
= diameter = 2 x 5 = 10 cm.

## Mathematics (Maths) Class 10

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## Mathematics (Maths) Class 10

116 videos|420 docs|77 tests