{"id":136447,"date":"2022-04-08T12:36:03","date_gmt":"2022-04-08T07:06:03","guid":{"rendered":"https:\/\/www.aakash.ac.in\/blog\/?p=136447"},"modified":"2023-03-14T12:19:28","modified_gmt":"2023-03-14T06:49:28","slug":"which-chapters-are-important-for-cbse-12th-physics-term-2-exam","status":"publish","type":"post","link":"https:\/\/www.aakash.ac.in\/blog\/which-chapters-are-important-for-cbse-12th-physics-term-2-exam\/","title":{"rendered":"Class 12 Physics: Important Chapters For CBSE Exam"},"content":{"rendered":"

The latest information about the CBSE Class 12 Physics Syllabus is right here! CBSE has released the class 12th Physics syllabus. The CBSE has separated the entire syllabus into two semesters, with exams for each term being held independently. The Physics syllabus for CBSE Class 12th consists of 9 units and 14 chapters separated into two terms. The Physics syllabus board has awarded four units in the first term of class 12th and five units in the second term. The theoretical portion will be worth 70 points, while the evaluation scheme will be worth 30 points.<\/span><\/p>\n

Students should pay great attention to the <\/span>Physics concepts<\/span><\/a> for class 12th and understand the fundamental ideas of Physics from NCERT textbooks. It will aid students in their future academics and competitive exams like <\/span>JEE Main<\/span><\/a>, <\/span>JEE Advanced<\/span><\/a>, <\/span>CUCET<\/span><\/a> NTA , and NEET UG, other olympiads in India.<\/span><\/p>\n

The CBSE examinations for term two will be subjective. Students will not be allowed the luxury of MCQs this time. There will be short and long answer-type questions for the Physics examination. However, only the remaining 50% of the syllabus will be tested (5 units), so students will still have a chance to earn better grades. The second term paper is a total of 50 marks. The written paper in this term contains a total of 35 marks. The remaining 15 marks will be awarded based on internal assessments and practical exams held at respective CBSE schools.<\/p>\n

Important Chapters<\/h2>\n

One or two chapters are not of utmost importance in subjects like Physics. All the chapters are important. It is undeniable that there is a different weightage for every chapter for CBSE 12th Physics term two examinations. Some chapters have more weightage over the others. Students often skip the chapters with less weightage and dedicate their time to high-weightage chapters. Remember that each mark is counted in your percentage. Students should not be careless to leave the topics covering fewer marks. Even half a point can have a huge impact on a student’s result. Hence, all the chapters of Physics are crucial for the CBSE Physics exam. Also, these chapters and topics hold great importance in competitive exams like JEE, NEET<\/a>, and the <\/span>olympiads<\/span><\/a>.\u00a0<\/span><\/p>\n

Provided below is the list of all chapters and their weightage in the CBSE term two paper, the total number of classes required, and the in-chapter important topics that a student must focus on for this term’s question paper.\u00a0<\/span><\/p>\n

Unit Wise List of Important Physic Chapters<\/h2>\n

Unit 5 and 6\u00a0<\/span><\/h3>\n

The highest weightage in the Physics CBSE class 12 paper is for Units 5 and 6. Unit 5 ‘Electromagnetic Waves and Unit 6 ‘Optics’ will award the students 17 out of 35. Almost half of the question paper will consist of only these two units. The chapters in each division are:<\/span><\/p>\n

Unit 5: Electromagnetic Waves<\/h3>\n\n\n\n\n
Chapter 8<\/span><\/td>\nElectromagnetic Waves<\/span><\/td>\n<\/tr>\n
<\/td>\nImportant Topics:\u00a0 EM waves\u00a0<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Displacement current\u00a0<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Nature of EM waves<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Unit 6: Optics<\/h3>\n

Optics is the biggest unit of Class 12th Physics. More than ten marks questions will appear from this unit in the examination. A total of 18 lectures are required to learn the entire unit. Students must be well versed with every important topic mentioned below to score full marks in this unit. Optics is divided into two chapters: Ray Optics and Optical Instruments and Wave Optics.\u00a0<\/span><\/p>\n\n\n\n\n
Chapter 9<\/span><\/td>\nRay Optics and Optical Instruments<\/span><\/td>\n<\/tr>\n
<\/td>\nImportant Topics:\u00a0 Image formation by spherical mirrors<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Image formation by spherical lenses<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Power and combination of lenses<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Nature of EM waves<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Total Internal Reflection<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Natural phenomenon due to light\u00a0<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Refraction through a Prism<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Eye\u00a0<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Microscope\u00a0<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Telescope<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Problems related to image formation are dominant in this chapter. The working of the eye and the principles behind microscope and telescope have appeared many times in the board examination. The derivation-type questions are taken from refraction and total internal reflection through a prism.\u00a0<\/span><\/p>\n\n\n\n\n
Chapter 10<\/span><\/td>\nWave Optics<\/span><\/td>\n<\/tr>\n
<\/td>\nImportant Topics: Incoherent and coherent waves addition<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0Reflection and refraction of plane waves using Huygen principle<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0Interference and Young\u2019s double-slit experiment<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0Diffraction of light<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0Polarisation by scattering<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0Resolving power of optical Instruments<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Questions from Wave Optics, especially Young’s double-slit experiment, have been asked every time in the board examination. Lots of numerical, derivations and theoretical questions are asked from this unit.\u00a0<\/span><\/p>\n

Units 7 and 8\u00a0<\/span><\/h3>\n

Units 7 and 8 contain three chapters that carry 11 marks in the CBSE class 12th Physics term two examinations. These units mainly deal with modern-day Physics related to atoms and light. The chapters in these units are more important for JEE and <\/span>NEET examinations<\/span><\/a>.\u00a0<\/span><\/p>\n

Unit 7: Dual Nature of Radiation and Matter<\/h3>\n\n\n\n\n
Chapter 11<\/span><\/td>\nDual Nature of Radiation and Matter<\/span><\/td>\n<\/tr>\n
<\/td>\nImportant Topics:\u00a0 Photoelectric effect<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0De Broglie hypothesis<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Davisson and Germer experiment<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Einstein photoelectric equation<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

All these topics are asked in the CBSE previous year’s question papers. The photoelectric effect is asked about almost every year. Long answer-type questions may occur from the Davisson and Germer experiment.\u00a0<\/span><\/p>\n

Unit 8: Atoms<\/h3>\n

The first chapter of unit 8 is Atoms. The chapter focuses mainly on the Bohr atomic model and the hydrogen spectrum. A student can expect 3 – 4 marks questions from this chapter.<\/span><\/p>\n\n\n\n\n
Chapter 12<\/span><\/td>\nDual Nature of Radiation and Matter<\/span><\/td>\n<\/tr>\n
<\/td>\nImportant Topics:\u00a0 Atomic spectra<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Electron Orbits<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0De-Broglie explanation of Bohr\u2019s postulates<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Bohr Model of a Hydrogen atom<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Line spectra of a Hydrogen atom<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Unit 8: Nuclei<\/h3>\n

The nucleus is a small chapter with a major theoretical part and less numerical. Students can easily score full marks for this chapter with 2 – 3 days of preparation. If a numerical Board examination occurs in this chapter, it will be related to radioactive decay.\u00a0<\/span><\/p>\n\n\n\n\n
Chapter 13<\/span><\/td>\nNuclei<\/span><\/td>\n<\/tr>\n
<\/td>\nImportant Topics:\u00a0 Nuclear binding energy<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Radioactivity<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Radioactive decays<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Unit 9<\/h3>\n

Unit 9 contains a single chapter worth seven marks which is Semiconductor Electronics. The chapter deals with a semiconductor material, the devices made of semiconductor materials, and simple circuits using these devices. The important topics for this unit are:<\/span><\/p>\n\n\n\n\n
Chapter 14<\/span><\/td>\nSemiconductor Electronics: Material, Devices and Simple Circuits<\/span><\/td>\n<\/tr>\n
<\/td>\nImportant Topics:<\/b> Intrinsic semiconductors<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Extrinsic semiconductors<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0p-n Junction diode<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0n-p-n and p-n-p transistor<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Junction diode as a rectifier<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Zener diode as a voltage regulator<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Logic gates<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Also See: Physics Preparation Tips<\/strong><\/p>\n

8 Tips to Ace CBSE Class 12 Physics Term 2 Exam 2022<\/a><\/p><\/blockquote>\n