NCERT Solutions for Class 11 Physics

Download Chapter-wise NCERT Solutions for Class 11 Physics

NCERT Solutions for Class 11 Physics for all chapters can be accessed here by following the links provided below. The highly experienced subject matter experts have explained each and every minute concept in the best way possible to help students face the exam without fear. Physics is a subject which contains a lot of concepts and numerical problems. For this purpose, a thorough understanding of the concepts is necessary to solve the problems effortlessly. NCERT Solutions is prepared in order to provide the students with authentic information completely based on the latest syllabus prescribed by the CBSE board.

From Class 11 Physics, students will study the various concepts which are important both from the exam and competitive exam perspective. The solutions provided here can be accessed by the students in online mode or can be downloaded as a PDF. Each chapter of NCERT Solutions for Class 11 Physics can be downloaded in a PDF format by clicking on the “Download PDF” button at the top of each chapter page given below.

The following chapters have been removed from the NCERT Class 11 Physics textbook 2023-24.

Physical World

Class 11 is an important stage in the life of a student because they are exposed to learning various new concepts. The solutions at BYJU’S not only helps them to understand it but also provides them with a basic knowledge of their applications in our daily life. So learning the chapters present in the NCERT textbook will help them to obtain a strong hold on the basic concepts. There are numerical problems and examples present in each chapter, which are explained in a step-wise manner to improve the problem-solving abilities of the students.

Download NCERT Solutions for Class 11 Physics to speed up the exam preparation.

NCERT Solutions Class 11 Physics

NCERT Solutions Class 11 Physics is an important study material which helps students to master the subject. Physics is a crucial subject from the exam perspective, which is difficult to master as it deals with various properties of nature and matter. It forms a strong base for students who wish to pursue higher levels of education in the field of Science. The solutions are planned out to aid the Class 11 students in achieving good marks in the exam. The expert teachers answer each and every question in an elaborate manner so that students do not miss any concept which is important for the exam. By regular practice using the NCERT Solutions, students will be able to know the right way to approach the questions which would appear in the exam.

NCERT Solutions Class 11 Physics Chapter Details and Exercises

Chapter 1: Physical World

In this chapter, we will be studying how things work and the reason behind it. Students will become more aware of the things surrounding them, the origin and the history of Science. They will also come across various aphorisms and their justification using Physics concepts in real life in this chapter. The concepts covered here are gravitational force, electromagnetic force, strong and weak nuclear force. The theories and observations done by various scientists and their conclusion is provided briefly here. You will gain more idea about the factors which are the reasons for the development of Science and Technology in our country. The existence of an electron is explained in this chapter in an elaborate manner to acquaint students with the basic conceptual knowledge.

Topics Covered in Class 11 Physics Chapter 1 Physical World

Physics: Scope and excitement; nature of physical laws; Physics, technology and society

Also, access the following resources for Class 11 Chapter 1 Physical World, at BYJU’S:

• Physical World Class 11 Notes Chapter 1
• Physics Revision Notes for Class 11 Chapter 1 Physical World
• Physical World and Measurement MCQs
• NCERT Exemplar Class 11 Physics Solutions for Chapter 1 – Introduction

Chapter 2: Units and Measurements

With the senses like ears, eyes etc., scientists gather information and make observations. A few of them are like figuring out the colour and texture, while others would be complex where measurement is necessary. It is a basic concept in Science without which scientists will not be able to conduct any experiments. Students will learn about the units of physical quantities and the method to be followed to evaluate them. It will also provide a good idea of the errors which would occur while measuring things and significant figures.

Topics Covered in Class 11 Physics Chapter 2 Units and Measurements

Need for measurement: Units of measurement; systems of units; SI units, fundamental and derived
units. Length, mass and time measurements; accuracy and precision of measuring instruments; errors in measurement; significant figures.
Dimensions of physical quantities, dimensional analysis and its applications.

Also, access the following resources for Class 11 Chapter 2 Units and Measurements, at BYJU’S:

• NCERT Exemplar Class 11 Physics Solutions for Chapter 2 – Units and Measurements
• Chapter 2 – Units and Measurements
• Class 11 Physics Units and Measurements Chapter 2 Notes

Chapter 3: Motion in a Straight Line

This chapter will cover essential topics like comparing objects as point object and the method of plotting graphs and finding the values based on them. The method plotting x-t motion graph can be learnt easily by using the NCERT Solutions from BYJU’S. The time taken by a biker, the speed of a car and the time taken by a bus to travel can be found effortlessly by referring to these solutions. Students will learn the difference between magnitude of displacement and the total length of the path covered. They will also study about the average speed, average velocity, instantaneous speed and velocity as per the CBSE guidelines.

Topics Covered in Class 11 Physics Chapter 3 Motion in a Straight Line

Frame of reference. Motion in a straight line: Position-time graph, speed and velocity. Uniform and non-uniform motion, average speed and instantaneous velocity.
Uniformly accelerated motion, velocity-time and position-time graphs, relations for uniformly accelerated motion (graphical treatment).
Elementary concepts of differentiation and integration for describing motion.

Also, access the following resources for Class 11 Chapter 3 Motion in a Straight Line, at BYJU’S:

• NCERT Exemplar Class 11 Physics Solutions for Chapter 3 – Motion in a Straight Line
• Class 11 Physics Chapter 3 Notes Motion in a Straight Line
• Chapter 3 – Motion in a Straight Line
• Motion in a Straight Line MCQs for NEET

Chapter 4: Motion in a Plane

Students will learn about the scalar and vector quantities and their difference. The method of performing algebraic expressions on various scalar quantities are also explained here. Besides, true or false questions based on these concepts and their justification are elaborated under each answer. We will also learn the concept of magnitude of vectors and their co-linearity, magnitude of displacement vector and the various types of displacement of a moving vehicle. It will help us to understand the time taken by a person to cross a river, experience of riding a bicycle in rain and a ball thrown by a cricketer in the ground.

Topics Covered in Class 11 Physics Chapter 4 Motion in a Plane

Scalar and vector quantities: Position and displacement vectors, general vectors and notation, equality of vectors, multiplication of vectors by a real number; addition and subtraction of vectors. Relative velocity.
Unit vectors. Resolution of a vector in a plane – rectangular components. Motion in a plane.
Cases of uniform velocity and uniform acceleration – projectile motion. Uniform circular motion.

Also, access the following resources for Class 11 Chapter 4 Motion in a Plane, at BYJU’S:

• CBSE Physics Notes Class 11 Chapter 4 Motion in a Plane
• Chapter 4 – Motion in a Plane
• NCERT Exemplar Class 11 Physics Solutions for Chapter 4 – Motion in a Plane

Chapter 5: Laws of Motion

This chapter is very important in mechanics. Problems based on the conservation of momentum are frequently asked in the exam. By going through this chapter, students will become well-versed with the laws of motion and their applications in our daily activities. Various numerical problems based on mechanics are solved clearly in this chapter to boost the exam preparation of students. Having a good knowledge of these concepts, students will be able to pursue well in their higher education levels.

Topics Covered in Class 11 Physics Chapter 5 Laws of Motion

Intuitive concept of force. Inertia, Newton’s first law of motion; momentum and Newton’s second law of motion; impulse; Newton’s third law of motion. Law of conservation of linear momentum and its applications.
Equilibrium of concurrent forces. Static and kinetic friction, laws of friction, rolling friction, lubrication.
Dynamics of uniform circular motion: Centripetal force, examples of circular motion (vehicle on level circular road, vehicle on banked road).

Also, access the following resources for Class 11 Chapter 5 Laws of Motion, at BYJU’S:

• NCERT Exemplar Class 11 Physics Solutions for Chapter 5 – Laws Of Motion
• Laws Of Motion Class 11 Notes

Chapter 6: Work, Energy and Power

The Work Energy Theorem is an important concept in this chapter. Students are highly recommended to learn this chapter effectively as it is continued in future classes also. The work done by a person and the energy required to do that work is explained briefly with suitable examples to make the students well-versed with the concepts. Problems on determining the energy and power are solved in a step-wise manner based on the mark weightage allotted by the CBSE board. Practising these concepts regularly will make them master the chapter effortlessly.

Topics Covered in Class 11 Physics Chapter 6 Work, Energy and Power

Scalar product of vectors. Work done by a constant force and a variable force; kinetic energy, work-energy theorem, power.
Notion of potential energy, potential energy of a spring, conservative forces; conservation of mechanical energy (kinetic and potential energies); non-conservative forces; elastic and inelastic collisions in one and two dimensions.

Also, access the following resources for Class 11 Chapter 6 Work, Energy and Power, at BYJU’S:

• Work, Energy and Power Class 11 Notes
• NCERT Exemplar Class 11 Physics Solutions for Chapter 6 – Work, Energy and Power

Chapter 7: System of Particles and Rotational Motion

This chapter will help students understand the motion of extended bodies, such as the system of particles. The centre of mass of a system of particles is the main concept in this chapter. The term motion and its usefulness are briefly explained as per the syllabus of the CBSE board. As many concepts are covered under this chapter, students are highly recommended to make use of a perfect study material while answering the exercise questions from the textbook.

Topics Covered in Class 11 Physics Chapter 7 System of Particles and Rotational Motion

Centre of mass of a two-particle system, momentum conservation and centre of mass motion.
Centre of mass of a rigid body; centre of mass of circular ring, disc, rod and sphere.
Vector product of vectors; moment of a force, torque, angular momentum, conservation of angular momentum with some examples.

Equilibrium of rigid bodies, rigid body rotation and equation of rotational motion, comparison of linear and rotational motions; moment of inertia, radius of gyration. Values of M.I. for simple geometrical objects (no derivation). Statement of parallel and perpendicular axes theorems and their applications.

Also, access the following resources for Class 11 Chapter 7 System of Particles and Rotational Motion, at BYJU’S:

• System of Particles and Rotational Motion Class 11 Notes
• NCERT Exemplar Class 11 Physics Solutions for Chapter 7 – System of Particles and Rotational Motion
• Physics Revision Notes for Class 11 Chapter 7 System of Particles and Rotational Motion

Chapter 8: Gravitation

We know that all material objects are attracted towards the Earth. The things which we throw up fall down. Climbing a hill is difficult when compared to going downhill. Gravitation is a very popular concept as most of them which we study in the future are in accordance with this phenomenon. To understand the more complex concepts in this chapter, students should know the difference between gravity and gravitation. The other concepts discussed in this chapter are potential energy difference between two points, acceleration due to gravity and interplanetary motion.

Topics Covered in Class 11 Physics Chapter 8 Gravitation

Kepler’s laws of planetary motion. The universal law of gravitation.
Acceleration due to gravity and its variation with altitude and depth.
Gravitational potential energy; gravitational potential. Escape speed, orbital velocity of a satellite. Geostationary satellites.

Also, access the following resources for Class 11 Chapter 8 Gravitation, at BYJU’S:

• Gravitation Class 11 Notes
• NCERT Exemplar Class 11 Physics Solutions for Chapter 8 – Gravitation

Chapter 9: Mechanical Properties of Solids

A rigid body has a definite shape and size, but in reality, it is bent, stretched and compressed. A force is necessary in order to know the shape of a solid. The concepts of importance in this chapter are plasticity and elasticity. Students will learn about the mechanical properties of a solid, Young’s Modulus of copper and steel and the yield strength. Problems based on these concepts appear in the exams for more marks, so it is necessary to practise them on a daily basis. Students will also get to know about the stress-strain relationship graph, which is very important for the exam.

Topics Covered in Class 11 Physics Chapter 9 Mechanical Properties of Solids

Elastic behaviour, stress-strain relationship, Hooke’s law, Young’s modulus, bulk modulus, shear,
modulus of rigidity.

Also, access the following resources for Class 11 Chapter 9 Mechanical Properties of Solids, at BYJU’S:

• CBSE Class 11 Physics Notes Chapter 9 Mechanical Properties of Solids
• Physics Revision Notes for Class 11 Chapter 9 Mechanical Properties of Solids
• NCERT Exemplar Class 11 Physics Solutions for Chapter 9 – Mechanical Properties of Solids

Chapter 10: Mechanical Properties of Fluids

Here, we will learn about the physical properties of liquids and gases. They are called as fluids as they have the capacity to flow. This is an important property which separates solids from liquids and gases. The other important concepts covered here are Bernoulli’s principle, Reynold’s number, streamline flow, viscosity and surface tension. The fundamental property of a fluid is that it can flow. It has no resistance to change its shape. Students will get a clear picture about the mechanical properties of fluids which are of more marks in the final exam.

Topics Covered in Class 11 Physics Chapter 10 Mechanical Properties of Fluids

Pressure due to a fluid column; Pascal’s law and its applications (hydraulic lift and hydraulic brakes). Effect of gravity on fluid pressure.
Viscosity, Stokes’ law, terminal velocity, Reynold’s number, streamline and turbulent flow.

Bernoulli’s theorem and its applications.
Surface energy and surface tension, angle of contact, application of surface tension ideas to drops, bubbles and capillary rise.

Also, access the following resources for Class 11 Chapter 10 Mechanical Properties of Fluids, at BYJU’S:

• Mechanical Properties of Fluids Class 11 Notes
• Physics Revision Notes for Class 11 Chapter 10 Mechanical Properties of Fluids
• NCERT Exemplar Class 11 Physics Solutions for Chapter 10 – Mechanical Properties of Fluids

Chapter 11: Thermal Properties of Matter

We all are familiar with heat and temperature. The method used to determine the temperature is covered in this chapter. Students will also get a clear idea about Newton’s Law of Cooling, which is an important concept for various competitive exams. Temperature is the hotness possessed by a body that can be measured using a thermometer. The various thermal properties of matter are listed in a step-wise manner in this chapter to make students more confident about the concepts.

Topics Covered in Class 11 Physics Chapter 11 Thermal Properties of Matter

Heat, temperature, thermal expansion; specific heat capacity – calorimetry; change of state – latent heat.
Heat transfer – conduction, convection and radiation, thermal conductivity, Newton’s law of cooling.

Also, access the following resources for Class 11 Chapter 11 Thermal Properties of Matter, at BYJU’S:

• CBSE Class 11 Physics Notes Chapter 11 Thermal Properties of Matter
• Physics Revision Notes for Class 11 Chapter 11 Thermal Properties of Matter
• NCERT Exemplar Class 11 Physics Solutions for Chapter 11 – Thermal Properties of Matter

Chapter 12: Thermodynamics

Thermodynamics is a concept of heat and temperature and its conversion to other energy forms. It is one of the main topics which the question paper setters focus on, and most of the questions in the exams can appear from this chapter. In order to attain remarkable grades, it is crucial for students to learn all these concepts effectively. The laws of thermodynamics, specific heat capacity, various thermodynamic processes and the Carnot engine are some of the important concepts covered in this chapter.

Topics Covered in Class 11 Physics Chapter 12 Thermodynamics

Thermal equilibrium and definition of temperature (zeroth law of thermodynamics). Heat, work and internal energy. First law of thermodynamics.
Second law of thermodynamics: Reversible and irreversible processes. Heat engines and refrigerators.

Also, access the following resources for Class 11 Chapter 12 Thermodynamics, at BYJU’S:

• CBSE Class 11 Physics Notes Thermodynamics
• Physics Revision Notes for Class 11 Chapter 12 Thermodynamics
• NCERT Exemplar Class 11 Physics Solutions for Chapter 12 – Thermodynamics

Chapter 13: Kinetic Theory

This chapter is a more scoring section when it comes to exam preparation. Apart from the properties of solids and liquids, the properties of gases are easy to understand. Students will learn concepts like molecular nature of matter, behaviour of gases, kinetic theory of  an ideal gas, law of equipartition of energy, specific heat capacity and mean free path in this chapter. The problems are also solved in a systematic manner following the CBSE guidelines so that scoring good marks would be an easy task for the Class 11 students.

Topics Covered in Class 11 Physics Chapter 13 Kinetic Theory

Equation of state of a perfect gas, work done on compressing a gas.
Kinetic theory of gases: Assumptions, concept of pressure. Kinetic energy and temperature; rms speed of gas molecules; degrees of freedom, law of equipartition of energy (statement only) and application to specific heat capacities of gases; concept of mean free path, Avogadro’s number.

Also, access the following resources for Class 11 Chapter 13 Kinetic Theory, at BYJU’S:

• CBSE Class 11 Physics Notes Chapter 13 Kinetic Theory
• Physics Revision Notes for Class 11 Chapter 13 Kinetic Theory
• NCERT Exemplar Class 11 Physics Solutions for Chapter 13 – Kinetic Theory

Chapter 14: Oscillations

Oscillations are one of the basic concepts in Physics. It is very important for the students to learn the concepts from this chapter, as it will be continued in further classes as well. The concepts explained in this chapter are periodic and oscillatory motions, simple harmonic motion, uniform circular motion etc. To learn these concepts effectively, it is necessary for the students to follow suitable study material for this purpose. By learning the chapter on a daily basis, students will be able to face the more complex questions that would arise in the exam.

Topics Covered in Class 11 Physics Chapter 14 Oscillations

Periodic motion – period, frequency, displacement as a function of time. Periodic functions. Simple
harmonic motion (SHM) and its equation; phase; oscillations of a spring – restoring force and force
constant; energy in SHM – kinetic and potential energies; simple pendulum – derivation of expression
for its time period; free, forced and damped oscillations (qualitative ideas only), resonance.

Also, access the following resources for Class 11 Chapter 14 Oscillations, at BYJU’S:

• CBSE Class 11 Physics Notes Chapter 14 Oscillations
• Physics Revision Notes for Class 11 Chapter 14 Oscillations
• NCERT Exemplar Class 11 Physics Solutions for Chapter 14 – Oscillations

Chapter 15: Waves

This chapter contains comprehensive questions on important concepts like wave dynamics. Questions present in this chapter will assist students through concepts like the types of waves, speed of sound in air, the tension on strings and the dependence of the speed of sound in air. The important formulas and concepts are highlighted in the solutions to make a revision of concepts easier for the students. The various wave characteristics, such as amplitude, frequency, phase, wavelength, displacement of waves and resonance, are covered in this chapter.

Topics Covered in Class 11 Physics Chapter 15 Waves

Wave motion. Longitudinal and transverse waves, speed of wave motion. Displacement relation for a progressive wave. Principle of superposition of waves, reflection of waves, standing waves in strings and organ pipes, fundamental mode and harmonics. Beats. Doppler effect.

Also, access the following resources for Class 11 Chapter 15 Waves, at BYJU’S:

• CBSE Class 11 Physics Notes Chapter 15 Waves
• Physics Revision Notes for Class 11 Chapter 15 Waves
• NCERT Exemplar Class 11 Physics Solutions for Chapter 15 – Waves

As there are many concepts present in each chapter, students have to revise the concepts on a regular basis to get a grip on them. It will help them to understand the right way of approaching the difficult questions in the final exam. NCERT Class 11 Books can be accessed by the students to get a clear understanding of the syllabus.

Features of BYJU’S NCERT Solutions for Class 11 Physics

The Class 11 Physics NCERT Solutions provided by BYJU’S have the following features:

• Elaborate explanations for all the textbook questions.
• A systematic process for answering numerical problems.
• Clear-cut answers for all the questions based on theory.
• Authentic information from highly experienced subject matter experts.
• Solutions are present in both online and offline modes.

Note: Class 11 Physics students (who are studying under the CBSE syllabus) can bookmark this page in their browser to easily access NCERT Solutions for Class 11 Physics in the future.

CBSE Marking Scheme 2023-24

CBSE board has divided the academic sessions covering the entire syllabus to help students learn the concepts effectively. A systematic approach is followed based on the interconnectivity of topics and concepts by the experts. The exams will be conducted by the CBSE board at the end of the academic year as per the bifurcated syllabus. This basically improves the condition of having board-conducted classes at the end of the year.

Why Should One Opt for BYJU’S NCERT Solutions?

The NCERT Solutions at BYJU’S are the best study material for students under the CBSE board. The content provided is accurate, and students can rely on these solutions to perform better in the annual exam. The solutions strictly follow the NCERT Class 11 Physics Syllabus, which is prescribed by the CBSE board. Some of the advantages of using the NCERT Solutions provided by us are given below.

• Top-notch experts prepare the solutions

The NCERT Solutions have been prepared by a set of highly experienced faculty at BYJU’S with the main aim of making quality educational content for each student. The precise and informative solutions are considered to be the best among all the other materials available online.

• Students will be able to answer complex questions in the exam

The NCERT Solutions at BYJU’S are famous for being student-friendly and easy to understand. Answers to difficult questions and problems are explained in steps to help students understand the method of solving them easily. The solutions provided are concept-focused and not question focused, which enables the students to face the different questions that would arise in the exam.

• The best study material for revision

After learning all the chapters, students are advised to revise all the concepts a month prior to the exam. This will help them to remember all the problems and concepts which are important from the exam perspective. It will also help them to memorise all the formulas and problems which are of high marks as per the CBSE exam pattern.

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