Sorry my dear friends for not being able to post since last two months but there is an amazing news for all my friends who are appearing for boards this march and also for the JEE Mains aspirants for their next attempt. So friends from today onward I will help you all by posting really important concepts of the chapters of PCM that are there in the NCERT. How is it helpful for Jee Mains aspirants? See, these posts will also cover the topics that most of the JEE aspirants leave like Communication System (which is our today's topic), Bio molecules etc. And as you know that this year 40% of question in JEE Mains are directly from NCERT. I hope you understand what I wanted to say. So please guys just go through these points everyday for the next 30 days and you will be exam ready. Its just for making your present workload easy. If you have read a certain chapter then this will be like revision for you and for the first time learners this is a comprehensive note form of NCERT and that's what is important. Lets see you there ;)
This chapter can be divided into following categories:- Classification Types of Semi-Conductors p-n junction diode Biasing of Diode Rectifiers Special Diodes (Zener, Photodiode, LED and Solar Cell) Transistors Logic Gates Communication System In the next few posts I will be posting in the same manner ie. (in bullets form) for your convenience and I hope that helps you in completing your syllabus. Classification Materials can be classified on the basis of conductivity as Conductors, Insulators and Semi Conductors. The basic difference among all the three is the difference of energy in between the Conducting and the Valence band. This can be seen here. Note- The range of conductivity should be kept in mind. For Semi-Conductors the energy difference is not very large but not even very less. So by providing proper conditions they can show conductivity. Types of Semi-Conductors Further we can say that there are two other types of semi con...
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