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Physics - Communication System

Practise 7 KCET previous year questions on Communication System, compiled from papers spanning 2015 to 2019. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty KCET tests.

Communication System has been asked in 5 of the 20 years of KCET papers analysed (2007–2026), with 7 questions in all. 100% of them were easy, 0% moderate and 0% tough. Most of its questions came from 2019, with 2 questions that year. In the last three years (2024–2026) it had 0 questions across 3 papers, about 0 per paper.

The chapter's 3 topics are not weighted equally: Communication System (5 questions, 71%), Modulation (1 question, 14%), and Propagation of EM Waves (1 question, 14%) have been asked the most.

  1. 1An antenna uses electromagnetic waves of frequency \( 5 {MHz} \). For proper working, the size of the antenna should be :2019Communication System
  2. 2The phenomenon involved in the reflection of radio-waves by ionosphere is similar to2019Communication System
  3. 3The radius of the Earth is \( 6400 {~km} \). If the height of the antenna is \( 500 {~m} \) then its range is2018Communication System
  4. 4\( 4 10^{10} \) electrons are removed from a neutral metal sphere of diameter \( 20 {~cm} \) placed in air. The magnitude of the electric fi2017Communication System
  5. 5The process of super imposing message signal on high frequency carrier wave is called2016Communication System
  6. 6The velocity - time graph for two bodies A and B are shown. Then the acceleration of A and B are in the ratio:2015Modulation
  7. 7A stone of mass \( 0.05 {~kg} \) is thrown vertically upwards. What is the direction and magnitude of net force on the stone during its upwa2015Propagation of EM Waves

Frequently Asked Questions

1.How many questions are available for Communication System?

This chapter includes 7 questions compiled from KCET papers spanning 2015 to 2019.

2.Are these questions only from KCET, or from other exams too?

These are KCET questions specifically for the Communication System chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Communication System an important chapter for KCET Physics?

Communication System has appeared in 5 of the 20 years of KCET papers covered here, with 7 questions across 5 papers - about one per paper it appears in.

4.What is the difficulty level of Communication System questions in KCET?

Of the 7 questions analysed for this chapter, 100% are easy, 0% moderate and 0% tough. 2019 had the most, with 2 questions.

5.Which topics in Communication System should I focus on?

These topics have carried the most weightage in Communication System:

  • Communication System - 5 questions (71%)
  • Modulation - 1 question (14%)
  • Propagation of EM Waves - 1 question (14%)
6.Is Communication System's weightage in KCET going up or down?

Across all 5 papers analysed, Communication System has averaged about 1.4 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.