Class 12 Physics Study Guide: CBSE Class 12 Physics Communication Systems Frequently Asked Questions
Review targeted academic resources with the CBSE Class 12 Physics Communication Systems Frequently Asked Questions. Built according to official CBSE standards for the 2026-27 term, these downloadable Class 12 Physics study materials support effective daily practice and deeper conceptual understanding for Chapter 15 Communication Systems.
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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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Free CBSE Study Guides: Class 12 Physics Chapter 15 Communication Systems
Core Study Kit: Class 12 Physics Chapter 15 Communication Systems
Review targeted study resources for Chapter 15 Communication Systems tailored for Class 12 learners. Utilizing these structured notes and quick-revision tools ensures complete alignment with current CBSE evaluation standards.
NCERT-Aligned Solutions for Chapter 15 Communication Systems
Each resource draws directly from authorized textbooks to maintain academic accuracy. Evaluating solved examples allows Class 12 students to master the formal presentation and answer-writing standards expected in upcoming school exams.
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FAQs
Our advanced study package for Chapter 15 Communication Systems includes detailed concepts, diagrams, Mind Maps, and explanation of complex topics to ensure Class 12 students learn as per syllabus for 2026 exams.
The Mind Maps provided for Chapter 15 Communication Systems act as visual anchors which will help faster recall during high-pressure exams.
Yes, teachers use our Class 12 Physics resources for lesson planning as they are in simple language and have lot of solved examples.
Yes, You can download the complete, mobile-friendly PDF of the Physics Chapter 15 Communication Systems advanced resources for free.
Yes, our subject matter experts have updated the Chapter 15 Communication Systems material to align with the rationalized NCERT textbooks and have removed deleted topics and added new competency-based questions.