# NCERT Solutions For Class 10 Maths Chapter 10 Circles Ex 10.1

Here, Below you all know about NCERT Solutions for Class 10 Maths Chapter 10 Circles Ex 10.1 Question Answer. I know many of you confuse about finding Chapter 10 Circles Ex 10.1 Of Class 10 NCERT Solutions. So, Read the full post below and get your solutions.

## NCERT Solutions for Class 10 Maths Chapter 10 Circles Ex 10.1

NCERT TEXTBOOK EXERCISES

Question 1. How many tangents can a circle have?

Solution:

There can be infinitely many tangents to a circle.

Question 2. Fill in the blanks:

(i) A tangent to a circle intersects it in ………… point(s).
(ii) A line intersecting a circle in two points is called a ………… .
(iii) A circle can have parallel tangents at the most ………… .
(iv) The common point of a tangent to a circle and the circle is called ……….. .

Solution:

(i) One
(ii) Secant
(iii) Two
(iv) Point of contact.

Question 3. A tangent PQ at a point P of a circle of radius 5 cm meets a line through the centre O at a point Q so that OQ = 12 cm. Length PQ is

(a) 12 cm
(b) 13 cm
(c) 8.5 cm
(d) √199 cm

Solution:

Radius of the circle = 5 cm
OQ = 12 cm
∠OPQ = 90°
[The tangent to a circle is perpendicular to the radius through the point of contact]
PQ2 = OQ2 – OP2 [By Pythagoras theorem]
PQ2 = 122 – 52 = 144 – 25 = 199
PQ = √199 cm.
Hence correct option is (d).

Question 4. Draw a circle and two lines parallel to a given line such that one is a tangent and the other, a secant to the circle.

Solution:

A line m is parallel to the line n and a line l which is secant is parallel to the given line.

## NCERT Solutions for Class 10 Maths Chapter 10 Circles Exercise 10.1 PDF

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