Academia Aeternum · Physics

Forces, Fields
& the Cosmos

From Newtonian mechanics to quantum theory — curated notes, MCQs, and textbook exercises for CBSE, JEE & NEET aspirants.

Class IX – XII JEE Mains & Advanced NEET UG CBSE Boards
Physics

Motion in a straight line-pyqs

Ent-Exam-Mcqs • Mar 2026

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Ent-Exam-Mcqs
Physics

Units and measurement-pyqs

Ent-Exam-Mcqs • Mar 2026

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Ent-Exam-Mcqs
Basic & Fundamentals
Notes
WAVES-Notes

The chapter “Waves” in NCERT Physics Class XI forms a crucial bridge between oscillatory motion and the study of sound, light, and other wave phenomena encounte...

Notes
OSCILLATIONS-Notes

Oscillatory motion is one of the most fundamental forms of motion encountered in physics and forms the backbone of several natural and technological phenomena. ...

Notes
KINETIC THEORY-Notes

The chapter Kinetic Theory forms a vital bridge between the microscopic world of atoms and molecules and the macroscopic laws of thermodynamics that govern ever...

Notes
THERMODYNAMICS-Notes

Thermodynamics is one of the most conceptually rich and foundational chapters in Class XI Physics. It provides a systematic framework to understand how heat, wo...

Notes
THERMAL PROPERTIES OF MATTER-Notes

The chapter “Thermal Properties of Matter” introduces students to the fundamental principles governing how matter responds to changes in temperature and heat. I...

Notes
MECHANICAL PROPERTIES OF FLUIDS-Notes

Fluids—liquids and gases—behave very differently from solids, yet they govern some of the most fascinating and essential phenomena observed in nature and techno...

Notes
MECHANICAL PROPERTIES OF SOLIDS-Notes

The study of Mechanical Properties of Solids forms the foundation for understanding how materials behave when forces act upon them. In everyday life as well as ...

Notes
GRAVITATION-Notes

Gravitation is one of the most fundamental interactions in nature, governing the motion of planets, satellites, stars, and even objects we experience in everyda...

Notes
SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-Notes

Physics does not stop at the motion of a single particle. Real-world objects are made of countless particles moving together, rotating, balancing, and interacti...

Notes
WORK, ENERGY AND POWER-Notes

Physics becomes truly meaningful when we understand how motion is driven, changed, and sustained in the real world. The chapter “Work, Energy and Power” lays th...

Notes
LAWS OF MOTION-Notes

Motion is not just about objects moving; it is about why they move, how they change their motion, and what resists or supports that change. Chapter 4 – Laws of ...

Notes
MOTION IN A PLANE-Notes

Motion in a plane marks a decisive step forward in the study of mechanics, as it extends the ideas of motion from a straight line to two dimensions. In this cha...

Notes
MOTION IN A STRAIGHT LINE-Notes

Motion is the most immediate and observable aspect of the physical world. From a falling leaf to a moving train, everything around us is constantly changing its...

Notes
UNITS AND MEASUREMENT-Notes

Physical quantities divide into fundamental (length, mass, time, etc.) and derived types, with SI providing seven base units (metre, kilogram, second, ampere, k...

Notes
Magnetic Effects of Electric Current-Notes

Electricity not only lights our homes but also creates invisible magnetic forces that drive countless machines around us. Chapter 12, “Magnetic Effects of Elect...

Notes
Electricity-Notes

Electricity is one of the most essential forms of energy used in our daily lives. From lighting our homes to powering machines, computers, and transport systems...

Notes
SOUND-Notes

Sound is an essential part of our everyday life. Whether it’s the laughter of friends, music from your favourite song, or the honking of cars, sound constantly ...

Notes
WORK AND ENERGY-Notes

The chapter "Work and Energy" is a fundamental part of Class 9 Science that explores the relationship between work, energy, and power. It introduces s...

Notes
GRAVITATION-Notes

Gravitation is one of the fundamental forces of nature that causes every object in the universe to attract every other object. This chapter introduces the conce...

Notes
The Human Eye and the Colourful World-Notes

The chapter "The Human Eye and the Colourful World" introduces students to the fascinating structure and functioning of the human eye, explaining how ...

Notes
Light – Reflection and Refraction-Notes

Chapter 9, "Light – Reflection and Refraction," introduces students to the fascinating world of light and its behavior when it encounters different su...

Notes
Force and Laws of Motion-Notes

The chapter “Force and Laws of Motion” in Class 9 Physics is one of the most important topics of the NCERT Science curriculum. It explains how objects move, sto...

Notes
Motion - Notes

🎯 MCQs & True/False
True-False
WAVES-True/False

Wave motion forms the conceptual bridge between oscillatory phenomena and real-world signal propagation, making it one of the most intellectually rich chapters ...

MCQs
WAVES-MCQs

Waves form a foundational pillar of classical physics, linking mechanical oscillations with sound, optics, and modern technological applications. NCERT Class XI...

True-False
OSCILLATIONS-True/False

True and False questions play a crucial role in mastering Oscillations, one of the most concept-dense chapters in NCERT Physics Class XI. This chapter lays the ...

MCQs
OSCILLATIONS-MCQs

Oscillatory motion is one of the most fundamental and concept-building topics in Class XI Physics, forming the backbone of wave motion, alternating current, qua...

True-False
KINETIC THEORY-True/False

A well structured set of True/False questions on Kinetic Theory helps students connect the microscopic motion of gas molecules with macroscopic quantities like ...

MCQs
KINETIC THEORY-MCQs

The chapter Kinetic Theory forms a crucial bridge between microscopic molecular motion and macroscopic thermodynamic behavior of gases. A sound conceptual under...

True-False
THERMODYNAMICS-True/False

Thermodynamics in Class 11 Physics introduces learners to the fundamental language of heat, work, internal energy, and the laws that govern energy transformatio...

MCQs
THERMODYNAMICS-MCQs

Thermodynamics is a concept-driven and application-intensive chapter that plays a crucial role in Class XI Physics as well as in competitive examinations such a...

True-False
THERMAL PROPERTIES OF MATTER-True/False

Thermal phenomena govern some of the most fundamental processes in nature, from everyday temperature changes to large-scale atmospheric and astrophysical events...

MCQs
THERMAL PROPERTIES OF MATTER-MCQs

Thermal phenomena govern some of the most fundamental processes observed in nature, from the expansion of solids and the flow of heat to the radiation emitted b...

True-False
MECHANICAL PROPERTIES OF FLUIDS-True/False

Mechanical Properties of Fluids is one of the most scoring yet conceptually rich chapters in Class 11 Physics, linking everyday fluid phenomena with core princi...

MCQs
MECHANICAL PROPERTIES OF FLUIDS-MCQs

Mechanical Properties of Fluids is a foundational chapter in Class XI Physics that bridges conceptual understanding with real-world applications, ranging from b...

True-False
MECHANICAL PROPERTIES OF SOLIDS-True/False

The chapter “Mechanical Properties of Solids” in NCERT Class XI Physics introduces how real solids deform, resist, and sometimes fail under external forces. Thr...

MCQs
MECHANICAL PROPERTIES OF SOLIDS-MCQs

Understanding the mechanical properties of solids is fundamental to physics because it explains how materials respond when forces act on them. From stretching a...

True-False
GRAVITATION-True/False

Gravitation is one of the most fundamental interactions in nature and forms a crucial bridge between school physics and advanced competitive exam preparation. T...

MCQs
GRAVITATION-MCQs

The following multiple-choice questions are carefully designed to strengthen conceptual clarity and problem-solving skills in NCERT Class XI Physics Chapter 7: ...

True-False
SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-True/False

Systems of particles and rotational motion form the bridge between simple particle mechanics and real-world rigid body dynamics covered in advanced physics. Thi...

MCQs
SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-MCQs

Understanding Systems of Particles and Rotational Motion marks a major conceptual shift in Class XI Physics—from studying motion of single particles to analyzin...

True-False
WORK, ENERGY AND POWER-True/False

Work, Energy and Power forms the cornerstone of classical mechanics in NCERT Class XI Physics Chapter 5, introducing students to fundamental concepts that bridg...

MCQs
WORK, ENERGY AND POWER-MCQs

Multiple Choice Questions (MCQs) play a crucial role in strengthening conceptual clarity, improving problem-solving speed, and preparing students for objective-...

True-False
LAWS OF MOTION-True/False

This curated set of 25 True/False questions on Laws of Motion is designed to guide learners from foundational Class 11 concepts to advanced engineering entrance...

MCQs
LAWS OF MOTION-MCQs

These 50 carefully designed MCQs are meant to strengthen conceptual clarity and problem-solving confidence in NCERT Class XI Physics Chapter 4 – Laws of Motion....

True-False
MOTION IN A PLANE-True/False

This curated True and False set for Motion in a Plane is designed to guide learners from basic NCERT concepts to advanced engineering entrance level thinking. I...

MCQs
MOTION IN A PLANE-MCQs

Motion in a plane marks a crucial transition in physics—from simple straight-line motion to a richer, more realistic description of how objects move in two dime...

True-False
MOTION IN A STRAIGHT LINE-True/False

These True and False questions on Motion in a Straight Line provide a graded journey from NCERT Class XI level to JEE/NEET entrance level, focusing entirely on ...

MCQs
MOTION IN A STRAIGHT LINE-MCQs

Multiple Choice Questions play a critical role in mastering kinematics, as they test not only formula recall but also conceptual clarity, graphical understandin...

True-False
UNITS AND MEASUREMENT-True/False

True and False questions are a powerful way to test whether concepts in Units and Measurement have been understood with precision rather than memorised mechanic...

MCQs
UNITS AND MEASUREMENT-MCQs

Units and Measurements is the foundational chapter of Class 11 Physics, introducing how every physical quantity is expressed numerically with a defined unit. It...

True-False
Magnetic Effects of Electric Current-True/False

25 carefully crafted True/False questions designed specifically for CBSE board exam preparation. Each statement tests core concepts including magnetic fields, f...

MCQs
Magnetic Effects of Electric Current-MCQs

Understanding how electric current produces a magnetic effect is a key concept in Class X Science. This chapter explores the deep connection between electricity...

True-False
Electricity-True/False

Electricity plays a vital role in modern life as a controllable and convenient form of energy used in homes, schools, industries, and hospitals. Class 10 Scienc...

MCQs
Electricity-MCQs

Multiple Choice Questions (MCQs) are an effective way to strengthen understanding, reinforce concepts, and prepare thoroughly for exams. This MCQ set for NCERT ...

True-False
SOUND-True/False

Strengthen your grasp of NCERT Class 9 Science Chapter 11 "Sound" with these 25 well-crafted True/False questions. Designed for practice and revision,...

MCQs
SOUND-MCQs

Prepare thoroughly for NCERT Class IX Science Chapter 11 "Sound" with this expertly designed set of 50 MCQs. These multiple-choice questions cover eve...

True-False
WORK AND ENERGY-True/False

Understanding Work and Energy is a key part of the NCERT Class 9 Science syllabus. This chapter explores how force causes displacement, how energy transforms fr...

MCQs
WORK AND ENERGY-MCQs

The chapter “Work and Energy” introduces students to two of the most fundamental concepts in Physics. It explains how work is done when a force causes displacem...

True-False
GRAVITATION-True/False

Gravitation is a fundamental force of nature that causes every object in the universe to attract every other object. This chapter explores Newton’s Universal La...

MCQs
GRAVITATION-MCQs

Gravitation is one of the most fundamental forces of nature, governing the motion of celestial bodies and the phenomena we experience every day on Earth. This c...

True-False
The Human Eye and the Colourful World-True/False

Sharpen your understanding of NCERT Class 10 Chapter 10 “The Human Eye and the Colourful World” with this curated set of True/False questions. Covering every co...

MCQs
The Human Eye and the Colourful World-MCQs

The human eye is one of nature’s most fascinating organs, allowing us to perceive the beautiful world around us in vivid color and depth. Chapter 10 – “The Huma...

True-False
Light - Reflection and Refraction-True/False

Strengthen your understanding of NCERT Class 10 Science Chapter 9, "Light – Reflection and Refraction," with these 25 expertly crafted True/False ques...

MCQs
Light - Reflection and Refraction-MCQs

Explore Class 10 Science Chapter 9 – Light: Reflection and Refraction through 50 well-crafted True/False questions with answers and detailed explanations. Stren...

True-False
Force and Laws of Motion-True/False

Test your understanding of NCERT Class 9 Physics Chapter 8 – Force and Laws of Motion with this engaging True/False quiz. The chapter introduces you to the fund...

MCQs
Force and Laws of Motion-MCQs

The chapter “Force and Laws of Motion” is one of the most important topics in Class 9 Physics. It introduces the fundamental ideas of force, inertia, momentum, ...

True-False
Motion - True/False

In this post, we have gone through an extensive set of true/false exercises to cover all possible one-sentence statements from Chapter 7, “Motion,” of the NCERT...

MCQs
Motion - MCQs

📘 Textbook Exercises
Exercise
WAVES-Exercises

Waves form the backbone of our understanding of how energy and information travel through space and matter without the physical transport of material. NCERT Cla...

Exercise
OSCILLATIONS-Execise

Oscillatory motion is one of the most fundamental forms of motion in physics, underlying a wide range of natural phenomena and technological applications—from t...

Exercise
KINETIC THEORY-Exercise

The chapter Kinetic Theory forms a crucial bridge between the microscopic world of molecules and the macroscopic behavior of gases that we observe in everyday l...

Exercise
THERMODYNAMICS-Exercise

Thermodynamics is one of the most conceptually rich and application-oriented chapters in NCERT Class XI Physics. It forms the foundation for understanding energ...

Exercise
THERMAL PROPERTIES OF MATTER-Exercise

Solutions to Textbook Exercises – NCERT Physics Class IX, Chapter 10: Thermal Properties of Matter Thermal Properties of Matter is a foundational chapter in Cl...

Exercise
MECHANICAL PROPERTIES OF FLUIDS-Exercise

Mechanical Properties of Fluids is one of the most conceptually rich and application-oriented chapters in Class 11 Physics. It connects abstract ideas of pressu...

Exercise
MECHANICAL PROPERTIES OF SOLIDS-Exercise

The chapter Mechanical Properties of Solids forms a crucial bridge between abstract physical laws and the real-world behaviour of materials under applied forces...

Exercise
GRAVITATION-Exercise

Gravitation is one of the most fundamental forces in nature, governing the motion of planets, satellites, stars, and even galaxies, while simultaneously determi...

Exercise
SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-Exercise

Chapter 6, Systems of Particles and Rotational Motion, marks a major conceptual leap in Class XI Physics, where students move beyond point-particle mechanics to...

Exercise
WORK, ENERGY AND POWER-Exercise

Welcome to the comprehensive solutions for NCERT Class XI Physics Chapter 5 "Work, Energy and Power" – the foundational chapter that bridges classical...

Exercise
LAWS OF MOTION-Exercise

These NCERT exercise solutions for Class 11 Physics, Chapter “Laws of Motion”, have been written to guide students from raw problem statements to clear, confide...

Exercise
MOTION IN A PLANE-Exercise

This collection of solutions for NCERT Class 11 Physics Chapter “Motion in a Plane” has been crafted to guide students from basic vector ideas to multi step num...

Exercise
MOTION IN A STRAIGHT LINE-Execrise

Chapter 2 of NCERT Physics Class XI, Motion in a Straight Line, introduces the core language of mechanics: displacement, velocity, acceleration and their graphs...

Exercise
UNITS AND MEASUREMENT-Exercise

Physics begins not with complicated laws or intimidating equations, but with the simple act of measuring the physical world correctly. Chapter 1, Units and Meas...

Exercise
Magnetic Effects of Electric Current-Exercise

Master the NCERT Class X Science Chapter 12 "Magnetic Effects of Electric Current" textbook exercise solutions with these detailed, exam-oriented answ...

Exercise
Electricity-Exercise

This collection of solutions covers all 18 textbook exercise questions from NCERT Class 10 Science Chapter 11, "Electricity." The answers focus on key...

Exercise
SOUND-Exercise

Sound is a fascinating topic that connects physics to our everyday experiences — from hearing a friend’s voice to enjoying music or detecting objects with sonar...

Exercise
WORK AND ENERGY-Exercise

Work and energy are two fundamental concepts in physics that explain how things move and change in the world around us. This chapter of NCERT Class 9 Science ex...

Exercise
GRAVITATION-Exercise

This chapter explores the fundamental force of gravitation which governs the attractions between all objects with mass. It explains how gravity acts between the...

Exercise
The Human Eye and the Colourful World-Exercise

Here you will find detailed, step-by-step solutions to the Text Book exercises from NCERT Class 10 Science Chapter 10, 'The Human Eye and the Colourful Wor...

Exercise
Light - Reflection and Refraction-Exercise

The NCERT Class X Physics Chapter "Light – Reflection and Refraction" dives into the fundamental concepts of how light interacts with different surfac...

Exercise
Force and Laws of Motion-Exercise

The exercises of Chapter 8: Force and Laws of Motion are designed to strengthen your understanding of the key concepts introduced in the chapter. These question...

Exercise
Motion-Exercise


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