NCERT Solutions Class 11 Physics Chapter 4

NCERT Solutions for Class 11 Physics Chapter 4 Motion in a Plane

Chapter 4 Motion in a Plane is one of the most important chapters in the Class 11 NCERT textbook. The major topics covered in the chapter are – Scalars and Vectors, Vector Multiplication by Real Numbers, Vector Resolution, Vector Addition – Analytical Method, Relative Velocity in Two Dimensions, Projectile Motion, and Uniform Circular Motion.

We learned about the concepts of displacement, position, acceleration, and velocity in the previous chapter, which are important in explaining the motion of an object in a straight line. The ‘+’ and ‘-‘ signs can be used to take care of the direction aspect. Vectors, on the other hand, can be used to explain the motion of an object in two or three dimensions. Students can refer to NCERT Solutions to understand the basic concepts from this chapter.

Motion in a Plane Class 11 NCERT Solutions

An understanding of problems in Chapter Motion in a Plane in class 11 helps students to answer theoretical questions as well as solve numerical problems. 

Before downloading the solutions, let’s look at the topics covered in Chapter 4 Physics Class 11.

Section Number Section Title
4.1 Introduction
4.2 Scalars and Vectors
4.2.1 Position and Displacement Vectors
4.2.2 Equality of Vectors
4.3 Multiplication of Vectors by Real Numbers
4.4 Addition and Subtraction of Vectors – Graphical Method
4.5 Resolution of Vectors
4.6 Vector Addition – Analytical Method
4.7 Motion in a Plane
4.7.1 Position Vector and Displacement
4.8 Motion in a Plane with Constant Acceleration
4.9 Relative Velocity in Two Dimensions
4.10 Projectile Motion
4.11 Uniform Circular Motion

4.1 Introduction

Students will learn about oscillatory motion and its equations and properties in this section.

4.2 Scalars and Vectors

Quantities in physics are classified as scalars or vectors. A vector quantity has magnitude as well as direction. 

4.2.1: Vectors of Position and Displacement:

The vector quantities of position and displacement are the same.

4.2.2: Vector Equality:

It’s possible that two vectors are equal. When their magnitude and direction are equal, it is possible.

4.3: Multiplication of Vectors by Real Numbers

In this section, students will learn that whenever a vector is multiplied with a real number, there will only be an increase in the magnitude, while the direction remains constant.

4.4 Addition and Subtraction of Vectors – Graphical Method

Using the graphical method, students will learn how to add and subtract two vectors. The law of parallelogram will apply to vectors.

4.5: Vector Resolution

Students will learn how to divide a given vector into two component vectors and a set of two vectors all in the same plane.

4.6 Vector Addition – Analytical Method

Analytical methods can also be used to add vectors. Combining the components of vectors makes it easier to add them.

4.7: Motion in a Plane

Students will learn how to use vectors to describe motion in two dimensions.

4.7.1: Position Vector and Displacement

A particle’s position vector in a plane with respect to the origin of an x-y reference frame.

4.8: Motion in a Plane with Constant Acceleration

With constant acceleration, if an object moves in the x-y plane with constant acceleration, the equation of motion is derived by dividing the average acceleration over a period of time.

4.9: Relative Velocity in Two Dimensions

Students will learn about relative velocity in two dimensions for motion along a straight line. They will also learn to extend motion in a plane or three dimensions.

4.10 Projectile Motion

A projectile is an object that flies after being thrown. The projectile motion and its equation will be studied by the students.

4.11 Uniform Circular Motion

Uniform circular motion occurs when an object follows a circular path at a constant speed.

Students are introduced to the concepts of scalars and vectors in Chapter 4. To gauge their understanding of the concepts, students should practise the questions and exercises given at the end of the chapter. 

Extramarks also helps students in finding out the right answers to the questions. They can download NCERT Solutions Class 11 Physics Chapter 4 from the website and check if they derived the right answer or to get answers to the question.

Access NCERT Solutions for Class 11 Physics Chapter 4 – Motion in a Plane

NCERT Solutions for Class 11 Physics Chapter 4 Download

While the graphical method of adding vectors aids in visualising the vectors and the resultant vector, it can be time-consuming and inaccurate. Adding vectors is much simpler when their components are combined. Class 11 Physics Chapter 4 NCERT Solutions will teach you that in one dimension, an object’s velocity and acceleration always follow the same straight line. However, for two or three-dimensional motion, velocity and acceleration vectors can have any angle between them between 0 and 180 degrees.

Motion in a plane is a crucial topic in CBSE class 11 Physics. Students must thoroughly prepare for this chapter in order to perform well in their board examination. The answers to the textbook questions can be found in NCERT Solutions for Class 11 Physics Chapter 4. It will also provide answers to key questions from previous year’s exam papers. The various types of problems and examples will assist the student in developing strong concepts of motion. 

CBSE Class 11 Physics Chapter 4 NCERT Solutions

We come across a variety of objects with oscillatory motions in our daily lives. NCERT Solutions for Class 11 Physics Chapter 4 assist students in comprehending this fundamental chapter of Physics. Students will learn about various terms and equations for planar motion in a two-dimensional plane.

Benefits of Motion in a Plane Class 11 Solutions

NCERT Solutions Class 11 Physics Chapter 4 is a fantastic resource for finishing the syllabus and improving your understanding. It provides a step-by-step solution to each exercise question and assists students in completing their homework quickly.

Class 11 Physics Chapter 4 NCERT Solutions will improve students’ understanding of this chapter of Physics. It will assist students in applying their conceptual knowledge to solve the problems presented in the chapter in a simple and straightforward manner. Other benefits students will receive with these solutions include:

  • The detailed Class 11 Physics Solutions will assist you in comprehending the topics in a better way.
  • Students can refer to the solutions provided here if they get stuck on any question  while practising. It will also facilitate a thorough review of the entire syllabus.
  • Students can improve their problem-solving skills by using the detailed and step-by-step solutions provided here.
  • By using these solutions, you will be able to gain a better understanding of the entire subject.
  • These solutions will also assist you in preparing for competitive examinations such as NEET and JEE.

Tips to Prepare for Class 11 Physics

Learn about the exam pattern and syllabus

Understanding the exam pattern and syllabus for Class 11 Physics is the most important thing for students. Students can prepare for their exams more effectively if they are familiar with the syllabus for class 11 Physics. The CBSE has changed the exam pattern for the current school year. As a result, students must be aware of the new exam pattern and syllabus for class 11 Physics.

Use the NCERT physics textbooks for Class 11

NCERT books cover the entire class 11 Physics syllabus. Students can easily understand the concepts of Physics after reading all of the chapters in the books. The information provided in NCERT books is accurate and complete. 

Focus on important topics

To score good marks, students should focus more on the topics that are important from the exam point of view. Work, Energy, and Power, Thermal Properties of Matter, Rotational Motion, Thermodynamics, Kinetic Theory, Gravitation, Laws of Motion, and Waves are the most important topics.

Make a study schedule

Students must create a study plan in order to prepare for the CBSE class 11 Physics syllabus. They should divide the syllabus appropriately so that they can cover all topics. Students should try to complete the entire syllabus one or two months before the final exams.

Make a list of key points

Students should jot down all important formulas, theorems, definitions, and principles from the class 11 Physics book. This will allow them to properly revise before the exams. Revision notes will also help you understand the concepts better.

Diagrams should be practised

Circuit diagrams and ray diagrams are important in physics, so students need to practise drawing them before they take the exam. To get good grades, students should memorise the labelling of these diagrams.

Revision as needed

Students must thoroughly review the entire CBSE class 11 Physics Syllabus. Regular review of important topics will assist students in memorising information for final exams. This will also help to reduce the students’ stress and boost their confidence. It can also help them perform better in exams.

FAQs (Frequently Asked Questions)

In Chapter 4 Physics Class 11, you will learn the following topics or concepts. Let’s take a look at a few of them right now;

  1. Displacement, Scalar and Vector
  2. Using real numbers to multiply vectors
  3. Using a graphical method – vector addition and subtraction
  4. Vector addition using a triangle and an analytical method
  5. Motion in a plane, velocity, acceleration, and finding averages

The NCERT Solutions for Class 11 Physics Chapter 4 ‘Motion in a Plane’ contains a variety of questions and answers. The questions will range in complexity from detailed to short-answer. Pick/choose the one out, true or false, reason stating questions, numerical or problem questions, long answer questions, and so on will all be included. The answers to these questions will also be given in the solution. As a result, you will find everything in one place and will not need to go elsewhere to study thoroughly.

A vector quantity has both magnitude and direction, while a scalar quantity has magnitude only. A vector quantity is always the cross product of two vector quantities, whereas a scalar quantity is always the dot product of two vector quantities. Mass, density and current are examples of scalar quantities. Vector quantities include acceleration, velocity, and displacement.

Class 11 is a pivotal point in every student’s life. Students’ career paths will be determined by their performance in Class 11. To that end, the faculty at Extramarks has developed solutions for all chapters based on the updated term – I CBSE Syllabus. Extramarks has NCERT Solutions Class 11 available for students. The solutions are designed with students’ first-term exam preparation in mind, regardless of intelligence level.

Try to get the best study material for Class 11 Physics Chapter 4 ‘Motion in a Plane.’ Studying multiple books at the same time can be a disaster. Instead, pick one and finish it before moving on to the others. You can also refer to Class 11 Physics Chapter 4 NCERT Solutions by Extramarks.