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Important Questions For Class 11 Physics Chapter 3 Motion in a Plane - PDF Download

JEE Mains & Advanced

NCERT Solutions for Motion in a Plane Class 11 Physics is provided in the form of a free PDF as this chapter is very important for students from the examination point of view. It would benefit the students to prepare for their exam better. Chapter 3 Physics Class 11 NCERT Solutions have been prepared to keep in mind the latest syllabus given by the CBSE. These solutions are prepared by our expert teachers who have been teaching for years and are very well accustomed to the syllabus and scoring schemes.

Class 11 Physics Chapter 3 NCERT Solutions would help the student gain a better knowledge and marks of the subject. Our team added a free PDF to download so that you can study the notes from anywhere and at any time. The study includes important concepts discussed and tips on how to utilize the NCERT Solutions for Motion in a Plane in the study curriculum. 

NCERT extra questions Solutions for Motion in a Plane helps students who are preparing for the Class 11 Physics exam. Let us know how exactly will these NCERT Solutions will help you and what they can find here:

  • NCERT Solutions Class 11 Physics Chapter 3 is the right thing that can help you to secure good marks in Class 11 examination. 

  • In the NCERT Class 11 Physics important questions Chapter 3 Solutions, students can find the solutions to the questions that have the most challenging and there are chances of coming in the exam. 

  • The motion in a plane Class 11 NCERT Solutions are prepared by one of the expert teachers who have expertise in this field; so that students can be confident in the Class 11 Physics Chapter 3 solutions that they are accurate. 

Important Topics & Sub-topics of Motion in a Plane Class 11 Physics

Class 11th Physics Chapter 3 NCERT Solutions will cover these topics:


In the first topic, you will be introduced to some concepts related to motion in a plane, such as concepts of position, velocity, displacement and acceleration. Explanations relating to these concepts are included in the ch 3 Physics Class 11 NCERT Solutions.

Scalars and Vectors

Further in the second topic, students will gain basic knowledge of scalars and vector quantities. Topics that are mentioned in this section are the difference between scalars and vectors, directions associated with scalars and vectors, definitions, displacement vectors, triangle law of addition, parallelogram law of addition, the magnitude of displacement and some other topics. Solutions to all these topics can be found in our chp 4 solution Class 11 NCERT Solutions.

Multiplication of Vectors by Real Numbers

In this part, you will learn how to derive an equation by using magnitudes and different formulas. You will also get to know about multiply the vectors by using the real numbers.

Addition and Subtraction of Vectors - Graphical Method

After the multiplication of vectors, students will learn about the triangle law, parallelogram law of addition and their definitions. You will gain knowledge of formulas of the head-to-tail method, triangle method of vector addition, commutative laws, null vectors and subtraction of vectors in this part of the chapter.

Resolution of Vectors

With the help of this section, students will know about the resolution of vectors and its implementation in a straight line. Getting an equation by using real numbers will be easy after learning the concepts.

Vector Addition - Analytical Method

Through this section, a student can learn to add vector numbers by an analytical method as well as with a graphical method.

Motion in a Plane

In this topic, a student will learn about velocity, acceleration, finding out averages, and then finally finding out the motion in a plane.

Motion in a Plane with Constant Acceleration

Here in this section, students will learn how motion in a plane can be treated as two different simultaneous one-dimensional motions, both of which have a constant acceleration in two different perpendicular directions.

Relative Velocity in Three Dimension

In this section, a student will learn how to find out three-dimensional motion in a plane by using relative velocity.

Projectile Motion

This section helps students in gaining knowledge of the concepts of projectile motion.

Uniform Circular Motion

This section gives us a basic knowledge of uniform circular motion.

Introduction to Motion in a Plane

  • Scalar and vector quantities

  • Position and displacement vectors

Vector Addition and Subtraction

  • Resolution and composition of vectors

  • Resultant of several vectors

  • Triangle law of vector addition

Motion in Two Dimensions

  • Displacement in two dimensions

  • Velocity in two dimensions

  • Acceleration in two dimensions

Projectile Motion

  • Introduction to projectile motion

  • Characteristics of projectile motion

  • Time of flight and maximum height

  • Range of a projectile

Uniform Circular Motion

  • Introduction to circular motion

  • Angular displacement, velocity, and acceleration

Class 11 Physics Chapter 3 Motion in a Plane Weightage

The weightage of a specific chapter, like "Motion in a Plane," in a Class 11 Physics syllabus can vary depending on your educational board and curriculum. Weightage is often determined by the number of marks allocated to questions related to that chapter in the board exams. To find the exact weightage for Chapter 3, you should refer to your specific board's syllabus or exam guidelines. This information may change over time, so it's essential to check the most recent syllabus or guidelines for accurate details regarding weightage.

Tips to Solve Class 11 Physics Chapter 3 Motion in a Plane

To solve Class 11 Physics Chapter 3 on "Motion in a Plane," here are some tips:

  •  Start by thoroughly understanding the basic concepts of motion in a plane, including vectors, displacement, velocity, and acceleration.

  •  Read your textbook carefully. Pay attention to definitions, formulas, and examples given in the book.

  •  Make concise notes as you read. Write down important formulas and concepts for quick revision.

  • Practice is key in physics. Solve as many problems and numerical exercises as you can. This will help you understand how to apply the concepts.

  •  Motion in a plane often involves vector diagrams. Draw diagrams to visualize the problem and make it easier to solve.

  • Understand how vectors work. Learn vector addition, subtraction, and vector products (dot and cross products).

  • Be comfortable working with angles in trigonometric form, especially when dealing with projectiles and circular motion.

  •  Learn the concept of relative motion, especially in situations involving two objects moving in different directions.

  • Some questions might ask you to derive certain equations. Practice these derivations and understand the steps involved.

  • Regularly review what you've learned. This will help reinforce your understanding.

  • Physics can be challenging, but staying calm and persistent is essential. Don't get discouraged by difficult problems.

  • This can give you an idea of the types of questions that are frequently asked in exams.

Practice and a deep understanding of the fundamental concepts are key to success in physics. Take it one step at a time and don't hesitate to seek help when needed. 

Benefits of Solving Class 11 Physics Chapter 3 Important Questions with Answers

Solving Class 11 Physics Chapter 3 important questions with answers offers several benefits, including:

  • Important questions are usually curated to cover fundamental concepts of the chapter. Solving them helps you grasp the core principles of motion in a plane.

  •  These questions emphasize the most significant topics in the chapter, helping you concentrate your revision efforts on what's essential.

  •  By working through important questions, you enhance your problem-solving skills, which are crucial not only in physics but in various aspects of life.

  •  Solving these questions can clarify any doubts you have about the chapter, as they often address areas where students commonly face difficulties.

  •  Working through important questions helps you become more efficient at managing your time during exams, as you'll learn to allocate time wisely to each question.

  •  As you successfully tackle these questions, your confidence in your physics knowledge and skills will increase, reducing exam anxiety.

  •  You'll gain experience in applying relevant formulas and equations to solve problems effectively.

  •  If you're aiming for competitive exams like JEE or NEET, solving important questions is crucial for scoring well in the physics section.

  • Repeated practice of key questions enhances your ability to remember and apply concepts during exams.

  • Ultimately, by mastering the important questions, you increase your chances of scoring well in your Class 11 physics exams.

To get the most out of solving important questions, it's important to understand the underlying concepts rather than just memorizing answers. Use them as a tool for focused and efficient preparation.

Frequently Asked Questions 

Question 1: What is the difference between scalar and vector quantities?

Answer: A quantity that has a magnitude but lacks a direction is known as a scalar quantity. A quantity that has both magnitudes, as well as a direction, is known as a vector quantity. A scalar quantity is a dot product of two quantities, whereas the vector is the cross product of two vector quantities. Examples of scalar quantities are current, mass and density. Here are the examples of vector quantity : acceleration, velocity and displacement. The difference between these two is very easy to understand.

Question 2: Define uniform circular motion according to Chapter 3 of the NCERT Solutions for Class 11 Physics.

Answer: Circular motion is the path that leads to the circular movement of the body or object. Likewise, when the motion of the object in the circular path is followed by a constant speed is uniform circular motion. The speed of the object is the same but with a change in velocity. When the object is moving around the circle, it is continuously changing its direction around the circle.


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