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NCERT Solutions for Exercise 10.1 Class 10 Maths Chapter 10 - Circles
The geometric definition of tangents to a circle provides the basic knowledge needed to study line interaction with curved shapes. The present exercise analyzes how tangents connect with circles at a single point while establishing their connection to radii together with chords and secants. The comprehension enables us to establish important properties through logical reasoning together with construction processes. Each question provides scenarios that require students to use triangle congruence and perpendicular lines together with the measured distance from a fixed point.
This Story also Contains
- NCERT Solutions Class 9 Maths Chapter 10: Exercise 10.1
- Topics covered in Chapter 10, Circles: Exercise 10.1
- NCERT Solutions of Class 10 Subject Wise
- NCERT Exemplar Solutions of Class 10 Subject Wise
Students benefit from the Exercise 10.1 NCERT Solutions from Class 10 Maths since these solutions help them effectively solve geometric problems. Core geometry abilities which form a foundation for advanced geometric methods become stronger through study of these fundamental characteristics in this field. The NCERT Books based exercise teaches students to identify the unique number of circle tangents together with the unique tangents from external points and their radius-tangent perpendicularity.
NCERT Solutions Class 9 Maths Chapter 10: Exercise 10.1
Q1 How many tangents can a circle have?
Answer:
Tangents are the lines that cross the circle precisely at a single point. There can be an endless number of tangents in a circle. This can be shown by the figures below:
Answer:
(a) One
In a single point, a circle's tangent crosses the circle precisely.
(b) Secant
It is a line that intersects the circle at two points.
(c) Two,
There can be only two parallel tangents to a circle.
(d) Point of contact
The common point of a tangent and a circle.
(A) 12 cm
(B) 13 cm
(C) 8.5 cm
(D) $\sqrt { 119}$ cm.
Answer:
It is given that the radius of the circle is 5 cm. OQ = 12 cm
According to the question,
We know that $\angle QPO=90^0$
So, triangle OPQ is a right-angle triangle. By using Pythagoras' theorem,
$PQ =\sqrt{OQ^2-OP^2}=\sqrt{144-25}$
$=\sqrt{119}$ cm
Therefore, the correct option is (d) = $\sqrt { 119}$ cm
The supplied line is AB, and the line CD parallels the line AB and is the tangent to a circle at point M. A secant parallel to the AB is the line EF.
Also Read-
Topics covered in Chapter 10, Circles: Exercise 10.1
1. Concept and definition of a tangent to a circle: A straight line which touches a circle only at a single point without entering it makes up a tangent. At the point where a circle and the tangent line interact, there forms the point of contact while the tangent line remains at right angles to the radius drawn from this point.
2. Number of tangents a circle can have: A circle allows an infinite number of tangents to exist because one can create a tangent from every location on its circumference. A given point outside the circle permits only two possible tangents to touch it.
3. The condition of tangency (line touches the circle at only one point): A tangent maintains its extraordinary feature by never entering inside the circle while touching the circle exclusively at one point. Gas makes it unique from both secant and chord connections.
4. Use of Pythagoras' theorem in radius-tangent situations: A right triangle appears when drawing a tangent from outside the circle as the radius meets the line extending from the external point to the center. The tangent length becomes possible to calculate through the application of the Pythagoras theorem.
5. The length equality applies to tangents created when using any external point: Any two tangents originating from a common outside circle point share the identical length. The fundamental property proves useful throughout multiple geometric constructions along with multiple proofs.
6. Difference between secants and tangents: A secant connects two points on a circle and enters the interior while touching the circle only at one unique point. Identifying this distinction proves vital when resolving multiple geometric tasks related to circles.
Also see-
NCERT Solutions of Class 10 Subject Wise
Students must check the NCERT solutions for class 10 of the Mathematics and Science Subjects.
Recommended eBooks
Related eBooks & Sample Papers
NCERT Exemplar Solutions of Class 10 Subject Wise
Students must check the NCERT Exemplar solutions for class 10 of the Mathematics and Science Subjects.
Frequently Asked Questions (FAQs)
Q: What are the requirements for solving NCERT solutions for Class 10 Maths chapter 10 exercise 10.1?
A:
Concepts covered in Class 9 such as radius, centre, chord, segment and sector are prerequisite for NCERT solutions for Class 10 Maths chapter 10 exercise 10.1
Q: What is the tangent of a circle according to NCERT solutions for Class 10 Maths 10 exercise 10.1 ?
A:
A tangent is a line that intersects the circle at only one point
Q: How lines behave around a circle as specified in NCERT solutions for Class 10 Maths 10 exercise 10.1?
A:
Outside circle line does not touch any point, on circle line touches one point and in the circle, line touches two points
Q: How many theorems are covered till NCERT solutions for Class 10 Maths 10 exercise 10.1 ?
A:
Only one theorem is covered till NCERT solutions for Class 10 Maths 10 exercise 10.1
Q: Explain the theorem covered in NCERT solutions for Class 10 Maths 10 exercise 10.1?
A:
The tangent is perpendicular to the radius via the point of contact at any point on a circle.
Q: How many activities are covered till NCERT solutions for Class 10 Maths 10 exercise 10.1?
A:
Two activities are covered till NCERT solutions for Class 10 Maths 10 exercise 10.1
Q: How are activities useful for NCERT solutions for Class 10 Maths 10 exercise 10.1?
A:
Ncert activities help us to visualize the concepts of tangent and circle by applying them in real life
Q: In the NCERT solutions for Class 10 Maths chapter 10 exercise 10.1, how many questions are covered?
A:
There are 4 questions in Class 10 Maths chapter exercise 10.1. Question 2 consists of four fill in the blank Question 3 consists of 4 subparts.
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You asked about Class 10 sample paper board exam and most important questions. Practicing sample papers and previous year questions is one of the best ways to prepare for the board exam because it gives a clear idea of the exam pattern and types of questions asked. Schools and teachers usually recommend students to solve at least the last five years question papers along with model papers released by the board.
For Class 10 board exams, the most important areas are Mathematics, Science, Social Science, English, and Hindi or regional language. In Mathematics, questions from Algebra, Linear Equations, Geometry, Trigonometry, Statistics, and Probability are repeatedly seen. For Science, the key chapters are Chemical Reactions, Acids Bases and Salts, Metals and Non metals, Life Processes, Heredity, Light and Electricity. In Social Science, priority should be given to Nationalism, Resources and Development, Agriculture, Power Sharing, Democratic Politics, and Economics related topics. In English, focus on unseen passages, grammar exercises, and important writing tasks like letter writing and essays.
CBSE Sample Papers 2026: How to Download
Follow these steps to access the SQPs and marking schemes:
Step 1: Visit https://cbseacademic.nic.in/
Step 2: Click on the link titled “CBSE Sample Papers 2026”
Step 3: A PDF will open with links to Class 10 and 12 sample papers
Step 4: Select your class (Class 10 or Class 12)
Step 5: Choose your subject
Step 6: Download both the sample paper and its marking scheme
Hello,
Yes, you can give the CBSE board exam in 2027.
If your date of birth is 25.05.2013, then in 2027 you will be around 14 years old, which is the right age for Class 10 as per CBSE rules. So, there is no problem.
Hope it helps !
Here are some strategies so u can do best in your board exams and get god score
1. Make a good and smart schedule
2. If u r from cbse board go through ncert books by heart
3. Solve pyqs of each subject
4. Do revision on daily basis
5. Practice on presentation and writing the answer .
6. Do your best and give exam with the best way possible all the best blud .
Hello! If you selected “None” while creating your APAAR ID and forgot to mention CBSE as your institution, it may cause issues later when linking your academic records or applying for exams and scholarships that require school details. It’s important that your APAAR ID correctly reflects your institution to avoid verification problems. You should log in to the portal and update your profile to select CBSE as your school. If the system doesn’t allow editing, contact your school’s administration or the APAAR support team immediately so they can correct it for you.
Hello Aspirant,
Here's how you can find it:
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School ID Card: Your registration number is often printed on your school ID card.
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Admit Card (Hall Ticket): If you've received your board exam admit card, the registration number will be prominently displayed on it. This is the most reliable place to find it for board exams.
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School Records/Office: The easiest and most reliable way is to contact your school office or your class teacher. They have access to all your official records and can provide you with your registration number.
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Previous Mark Sheets/Certificates: If you have any previous official documents from your school or board (like a Class 9 report card that might have a student ID or registration number that carries over), you can check those.
Your school is the best place to get this information.
Popular CBSE Class 10th Questions
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2.5 × 10-2 |
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