NCERT Grade 12 Physics Chapter 15, Communication Systems is from Unit 10, Communication Systems. The aim of this chapter is to introduce the concepts of communication, namely the mode of communication, the need for modulation, production and detection of amplitude modulation. Introduction to Communication System, Elements of a Communication System, Basic Terminology Used in Electronic Communication Systems, Bandwidth of Signals, Bandwidth of Transmission Medium, Propagation of Electromagnetic Waves, Groundwave, Sky waves, Space wave, Modulation and its Necessity, Size of the antenna or aerial, Effective power radiated by an antenna, Mixing up of signals from different transmitters, Amplitude Modulation, Production of Amplitude Modulated Wave and Detection of Amplitude Modulated Wave are the topics studied through this chapter.
Diagrams, graphs, illustrations and examples associated to daily life make this chapter very interesting and easy to learn. Solved numeral problems and unsolved ones for practice make the students understand the concept better and develop a strong grip on the subject. The contribution of eminent scientists such as JC Bose, Graham Bell and others in the field of Communication Systems has helped to further dig into the topic that the students shall study through this chapter. Detailed derivations to help derive formulas and equations will aid to solve the problems and understand the concepts.NCERT Grade 12 Physics Chapter 15, Communication Systems is from Unit 10, Communication Systems. Unit 10 holds a total weightage of 5 marks in the final examination.
Get 100 percent accurate NCERT Solutions for Class 12 Physics Chapter 15 (Communication Systems) solved by expert Physics teachers. We provide solutions for questions given in Class 12 Physics text-book as per CBSE Board guidelines from the latest NCERT book for Class 12 Physics. The topics and sub-topics in Chapter 15 Communication Systems are given below.
Ex 15.1 - INTRODUCTION
Ex 15.2 - ELEMENTS OF A COMMUNICATION SYSTEM
Ex 15.3 - BASIC TERMINOLOGY USED IN ELECTRONIC COMMUNICATION SYSTEMS
Ex 15.4 - BANDWIDTH OF SIGNALS
Ex 15.5 - BANDWIDTH OF TRANSMISSION MEDIUM
Ex 15.6 - PROPAGATION OF ELECTROMAGNETIC WAVES
Ex 15.6.1 - Ground wave
Ex 15.6.2 - Skywaves
Ex 15.6.3 - Space wave
Ex 15.7 - MODULATION AND ITS NECESSITY
Ex 15.7.1 - Size of the antenna or aerial
Ex 15.7.2 - Effective power radiated by an antenna
Ex 15.7.3 - Mixing up of signals from different transmitters
Ex 15.8 - AMPLITUDE MODULATION
Ex 15.9 - PRODUCTION OF AMPLITUDE MODULATED WAVE
Ex 15.10 - DETECTION OF AMPLITUDE MODULATED WAVE.
We cover all exercises in the chapter given below:-
Chapter 15 Exercises - 8 Questions with Solutions.
Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Communication Systems. Download the free PDF of Chapter 15 Communication Systems and take the print out to keep it handy for your exam preparation.