important questions for Bihar board class 12 physics chapter 15 communication system
Important questions for Bihar board class 12 physics chapter 15 communication system
Practice these important questions for Bihar board class 12 physics chapter 15 communication system to get more marks in your class 12 physics board exam.
Long Type-
1. Mention three different modes of propagation used in communication system.
Bihar Board -2014
2. Describe amplitude modulation and frequency modulation. Derive an expression for covering range of transmission antenna .
Bihar Board -2016
3. Explain mmodulation and write types of modulation .
Bihar Board -2017
Short Type-
1. What is Ionosphere?
2. Why satellites are used in long distance T.V. transmission?
3. What is meaning of “modulation index is 75%”?
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