If you are preparing for your CBSE Class 12 Physics exam, you will be happy to know that there are several resources available online to help you with your study. For example, you can access the NCERT Lab Manual, or you can try looking for other sources of notes online. Having these tools at your disposal will ensure that you are prepared for your exam. However, you will want to make sure that you are getting the right notes for the specific topics you are studying.
Electric Charges and Fields
When it comes to Class 12 physics, electric charges and fields are a key part of the syllabus. This topic is a good idea to focus on in order to score well in the exams. To help you with your preparation, here are some notes and resources.
The first thing you should do is learn about the basics of this subject. One of the best ways to do this is to get a quick review of a chapter. That way, you will be able to see what is covered in the book, and what is not.
Another way to do this is to try out some online mock tests. These tests are designed in accordance with the latest syllabus. You can take them as many times as you like to ensure that you are learning the material properly.
Wave Optics
Wave Optics in CBSE class 12 physics notes is a branch of physics that deals with study of optical phenomena. It studies polarisation, diffraction, interference and other physical optics.
In the context of light, the wave theory states that light travels in a transverse wave motion. However, this is not always the case. This is because the speed of light in a medium is dependent on the nature of the medium.
For example, light travels through a vacuum at a speed of 3 x 108 m/s. Similarly, the speed of light in a gaseous medium depends on the gas’s properties. Light is composed of tiny, invisible elastic particles.
In order to explain the nature of light, Descartes proposed a corpuscular model in 1637. Today, there is a debate between two scientific communities, a group that believes that light is a particle and another that believes that it is a wave.
Extrinsic Semiconductors
In order to understand semiconductors, it is essential to know what is an intrinsic semiconductor and what is an extrinsic semiconductor. These two types of semiconductors have different properties that make them useful for use in electronic devices.
The difference between intrinsic and extrinsic semiconductors is the number of valence electrons that exist in the atoms. An intrinsic semiconductor has zero or minimal impurities. Extrinsic semiconductors, on the other hand, contain impurities that enhance their conductivity.
Depending on the number of valence electrons, impurities can be classified into two groups: donor and acceptor. A pentavalent atom, for example, contains five valence electrons. It can bond with silicon atoms to form covalent bonds. This type of semiconductor is called n-type.
Alternating current can power electric motors
Electric motors are devices that turn energy into mechanical energy. There are several kinds of motors to choose from, each with their own set of advantages and drawbacks. The first electric motor was developed in the 1830s. Since then, several new types have been introduced. Some of them use direct current (DC), others use alternating current.
Direct current motors are the more efficient and powerful of the two. This is because DC is capable of powering the same amount of electrons, even though they travel in a single direction.
Alternating current, on the other hand, is more efficient when it comes to transmission over long distances. It is also easier to generate and cheaper to transmit. However, it is less efficient when it comes to converting the energy.
NCERT Lab Manual
If you are a student of Class 12 Physics, then you may be wondering where you can find the NCERT Lab Manual for CBSE Class 12 Physics Notes. As the name suggests, these books are designed to make the learning process easier and faster. They have all the required questions and revision class 12 chemistry notes.
Moreover, these books have the latest board syllabus, so that you can prepare well for the exam. You also get complete answers to the previous years’ board marking scheme questions and concept videos.
In order to study all the concepts and theories of class 12 Physics, you need to practice experiments. A good lab manual can help you to perform the experiments with confidence. These books have the list of all experiments and their detailed explanations. Also, the diagrams are neatly drawn.
In order to study all the concepts and theories of class 12 Physics, you need to practice experiments. A good lab manual can help you to perform the experiments with confidence. These books have the list of all experiments and their detailed explanations. Also, the diagrams are neatly drawn.
