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Study Material for Class 12 Physics Chapter 15 Communication Systems
Class 12 Physics students should refer to the following Pdf for Chapter 15 Communication Systems in Class 12. These notes and test paper with questions and answers for Class 12 Physics will be very useful for exams and help you to score good marks
Class 12 Physics Chapter 15 Communication Systems
CBSE Class 12 Physics Communication Systems Frequently Asked Questions. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick to learn flash cards, flow charts, mind maps, teacher notes, important formulas, past examinations question bank, important concepts taught by teachers. Students can download these useful educational material free and use them to get better marks in examinations. Also refer to other worksheets for the same chapter and other subjects too. Use them for better understanding of the subjects.
COMMUNICATION SYSTEMS
1. Draw a block diagram of communication system.
2. Distinguish between point to point and broadcast communication modes. Give one example of each.
3. Explain the following terms. a) Ground waves b) Space waves and c) sky waves.
4. What does the term LOS communication mean? Name the types of waves that are used for this communication. Give typical examples, with the help of a suitable figure, of communication systems that use space wave mode propagation.
5. Write the function of 1) Transducer and 2) repeater in the context of communication system.
7. We do not choose to transmit an audio signal by just directly converting it to an E.M wave of the same frequency. Give two reasons for the same.
8. Explain briefly with the help of diagrams the terms (i) amplitude modulation and (ii) Frequency modulation. Which of these (i) gives better quality transmission? (ii) Has a larger coverage
9. Why is short wave bands used for long distance transmission of signals?
10. Optical and radio telescope are built on the ground but x-ray astronomy is possible only from satellite?
11. Draw a block diagram for a transmitter and a receiver of AM wave.
12. Define the term modulation index for an AM wave. What would be the modulation index for an AM wave for which the maximum amplitude is ‘a’ and the minimum amplitude is b’
13. A TV tower has a height ‘h’. Derive an expression for maximum distance up to which the signal can be received from the earth.
14. What is meant by the term modulation? Explain with the help of a block diagram, how the process of modulation is carried out in AM broadcasts?
15. What is meant by ‘production’ of a modulated carrier wave? Describe briefly the essential steps with block diagram production.
16. What is meant by ‘detection’ of a modulated carrier wave? Describe briefly the essential steps with block diagram detection.
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CBSE Class 12 Physics Chapter 15 Communication Systems Study Material
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Study Material for Physics CBSE Class 12 Chapter 15 Communication Systems
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Chapter 15 Communication Systems Study Material Physics CBSE Class 12
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Chapter 15 Communication Systems CBSE Class 12 Study Material Physics
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CBSE Study Material Physics Class 12 Chapter 15 Communication Systems
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