CBSE Class 12 Physics Important Questions 2024-25

Sessions in school do not generally cover all the important questions that students should concentrate on while preparing for their board exams. A comprehensive Physics important questions Class 12 PDF would work as a ready reckoner to students to be well prepared for their examinations. Without a direction, students could easily lose focus if they do not have a standard format to follow which could lead to a significant dip in their grades. Vedantu presents important questions for class 12 physics with answers PDF as a guide for students to follow. Practising the given from the imp questions of Physics Class 12 chapter wise free PDF download would help students leverage their core areas and provide an avenue to score additional marks in the exams.

Important Questions for Class 12 Physics with Answers PDF 2024-25

The following chapters mentioned below are the most important questions for Class 12 Physics with answers 2024 PDF asked in Board exam:

Physics:

Optics:

Electromagnetic radiation sums up to this region of the spectrum between the wavelength of 400 nm to 750 nm is called light. There are two things that we can inherently mention light from common experience. Initially, it travels with enormous speed and second, that it travels in a straight line. The path through which light travels is called a ray of light and a bundle of such rays forms a beam of light. Also, the light energy is concentrated in tiny particles which are known as corpuscles. The laws of reflection and refraction are true for all surfaces and pairs of media at the point of the incidence. In this chapter, you will understand the concepts of refraction and reflection in a detailed way.

Ray optics will deal with one of the most important principles in the area of ray optics. The corpuscular model predicted that if the ray of light is bent towards the normal then the speed of light will be greater in the second medium. Waves from one point of source spread out in all directions, while the light was seen to travel along with narrow rays. It will require the insight and experiment of Huygens, Young and Fresnel to analyze how a wave theory will explain all aspects of the behaviour of light. In this chapter, you will come to know the Huygens principle clearly and derive the laws of reflection and refraction along with the phenomenon of interference which is based on the principle of superposition.

Electronic Devices:

Devices in which a controlled flow of electrons could be collected are known as the basic building blocks of all the electronic circuits. Before the discovery of transistors in 1948, such devices are also known as vacuum tubes, had two electrodes namely anode and cathode. In a vacuum tube, the electrons are produced by a heated cathode and the controlling flow of these electrons in a vacuum is obtained by varying the voltage between different electrodes. The vacuum is required in the inter-electrode space otherwise, the moving electrons may lose their energy on collision with the air molecules in their path. In such devices, the electrons could flow only from cathode to anode. The seed of the production of modern solid-state semiconductor electronics went back to 1930s where it was finally understood that some solid-state semiconductors and their junctions present in the possibility of controlling the number and the direction of flow of charge carrying through them.

Communication Systems:

The transmitter will be located in one place, the receiver is located at some other place in communication systems (far or near) which are separate from the transmitter and the channel is the physical medium that gets connected. Subject to the type of communication system, a channel could be in the form of wires or cables connecting with the transmitter and the receiver or it could be wireless also. The transmitters are meant for converting the message signal. In this chapter, students will learn about Communication Systems in detail.

Atoms and Nuclei:

J.J Thomson proposed the first atom model in 1898. According to this model, the positive charge of the atom is spread throughout the volume of the atom uniformly and the negatively charged electrons are embedded in it like seeds in a watermelon. This model was picturesquely called the plum pudding model of the atom. Another such model is Rutherford’s model. Both the Thomson’s as well as Rutherford’s models constitute an unstable system. Another such model is Bohr’s model where the orbital picture of the hydrogen atom was inconsistent along with the uncertainty principle. It was replaced by modern quantum mechanics in which Bohr’s orbits are regions where the electron may be found with a large probability.

Does the nucleus have a structure, just like an atom does? If so, what will be the constituents of the nucleus? Chadwick was awarded the Nobel Prize in Physics for his discovery of the neutron in 1935. Whereas, Rutherford was the engineer who put forward the existence of the atomic nucleus. In this chapter, you will gain in-depth knowledge of the Nucleus. The mass of a neutron is now known to a high degree of accuracy and is expected to be equal to the total mass of its individual protons and neutrons.

Electrostatics:

The concept of potential energy is not a new concept to you. When an external force acts on a body against the gravitational force or spring, the work done during that moment is stored as the potential energy of the body. From this chapter, you will get an idea of concepts such as electrostatic force between charges, capacitor, electric field, torque, etc.

Dual Nature of Matter:

Through this chapter, you will realise the photoelectric effect in detail. The minimum energy needed by an electron to come out from a metal surface is known as the work function of the metal. The photoelectric effect includes the conversion of light energy into electrical energy. It follows the law of conservation of energy. The photoelectric emission is an immediate process and possesses certain special features in it.

Magnetism:

Fundamentally, electrostatic field lines basically start at a positive charge and end at a negative charge or fade at infinity. Magnetic field lines always form a closed loop.  This chapter will help you understand the laws of obeying electricity and magnetism. Also, you will see how the forces are exerted by the magnetic field on moving charged particles like electrons, protons, and current-carrying wires. 

CBSE Class 12 Physics Weightage 2024-25

Chapter Wise Weightage Strategy for Class 12 Physics 

The strategy to score well in the Physics Board exam using imp questions of physics class 12 is mentioned below:

• Students who are weaker in Mathematics should first try to read Modern Physics. The Semiconductor is one of the most important chapters as the weight-age is around 8 marks. Atom and Nuclei together constitute 6 marks.

• The next set of chapters will carry a Dual Nature of Radiation which carries 4 marks. Communication system constitutes around 3 marks. Having a good command over these chapters will help students a great deal in scoring higher marks in Physics.

• Now you need to start with the important and difficult chapters like Optics which carries 14 marks in the board exam.

• In Optics, you have to complete Ray optics first, which is easier to study. In Wave Optics, you have to concentrate more on problems related to Interference, Diffraction, and Young’s double slit experiment.

• Current and Electricity is also an easy chapter and it carries 7 marks.

• If any student has not started studying Electrostatics and Magnetism till now then it is better to leave these chapters as these two units consume more time than the other chapters. However, these two chapters are very important for competitive exams.

• EMI is another chapter which you need to focus on to score well. It is an important chapter for both the exam boards and competitive exams.

• You have to practice the ray diagram and other important diagrams carefully. Drawing and studying simultaneously will help you understand many topics faster and in an easier way.

• Try to solve objective type questions to make yourself efficient in solving 1 mark questions in the exam; this will be a plus for you.

Why Vedantu?

Vedantu is bringing a radical change in the way students prepare for their examinations via a medium that is simple to use and comes at absolutely no cost. With a tight schedule and busy lifestyle, it is becoming increasingly difficult to source personal tutors for students. It is practically impossible for students to go for tuitions for every subject which leaves them with very little time to study at home. Also, schools today have teachers who provide a thorough understanding of the chapters in each subject. However, due to the lack of time schools are not able to train students on certain key aspects like important questions, articulated answers and revision of the key parts of certain chapters. Vedantu fills this gap by offering Physics important questions Class 12 PDF chapter wise free download. The questions are formulated after careful thought and consideration by experienced tutors working at Vedantu. Students are guaranteed to benefit from this free service and will definitely gain an added advantage in comparison to studying without any support. Online support in this form has paved a new way for students to increase their chances of securing higher grades.

Here are some reasons why our Imp questions of Physics Class 12 CBSE (NCERT) will benefit students for their board examinations:

• Vedantu boasts some of the best teachers in India who draft the answers to the questions.

• The questions chosen in every chapter are carefully picked after a lot of deliberation and research.

• The answers are detailed and explanatory making it easy for students to learn and recall.

• Our Important questions for Class 12 Physics with answers PDF for Chapter-wise is free to download and it helps saves a lot of time for students by sifting out the important parts of every chapter and tailor-made answers to the questions that are integral to the syllabus.

CBSE Importance Questions for Class 12 Physics with Answers PDF for Term 2

As mentioned earlier, there are 15 chapters in the syllabus of Class 12 Physics. These chapters are based on crucial topics such as charge, magnetism, electricity, semiconductor, communication system, electromagnetic waves, optics, etc. All these chapters are of utmost importance for studying and scoring in the exams.

This is where the complete study material for this subject will need the important questions compiled by the experts following the latest syllabus. These questions will be the best companion for practising. The students can only be able to answer these questions when they are done with a chapter and have understood the topics and concepts well.

Hence, these questions will also act as the perfect guide to finding out which part of a chapter needs more attention. Solving these questions after preparing a chapter will broaden the preparation level and help students to focus on the prime concepts better.

Advantages of Physics Class 12 Chapterwise Important Questions PDF for Board Exam

• The experts of Vedantu have studied the question patterns followed by the CBSE board and have framed these questions to follow and practice. Hence, solving these questions will guide students to learn more probable questions and help them score more.

• The solutions framed for the questions will help you to resolve doubts faster and better. You will also learn how to answer such questions in the right format and score more in the exams.

• The solutions have been framed in a stepwise simpler version so that students can easily understand how to use the concepts taught in a chapter and formulate such answers.

• By following these solutions, you can formulate the right strategy to attempt all the questions in an exam on time.

Download Imp Questions of Physics Class 12 PDF with Answers

Get the free Important Questions for Class 12 Physics with Answers 2024 PDF for all chapters and complete preparing the chapters in an exam syllabus. Solving and studying these questions will help you focus on the prime topics and make your conceptual foundation stronger. Learn from the solutions and how to solve fundamental questions and focus on developing your answering skills accordingly. This is how you can use these important questions and score more in the exams.

CBSE Class 12 Physics Study Materials

Other CBSE Class 12 Important Questions Related Links