What is line of sight communication?

Important Questions on Communication Systems

MEDIUM

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 25

Why is it not possible to use sky wave propagation for transmission of TV signals?

MEDIUM

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 26

What are TV signals? How can they be received?

MEDIUM

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 27

It is necessary to use satellite for long-distance TV transmission? Why?

MEDIUM

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 28

Explain, why microwaves are better carriers of signals for long-range transmission than radio waves?

EASY

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 29

Name the waves used in radar. Give order of their wavelength. Explain, why these particular waves are used in radar?

EASY

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 30

How does radar help in determining the distance of a distant object?

MEDIUM

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 31

Draw a schematic diagram showing the (i) ground wave (ii) sky wave and (iii) space wave propagation modes for electromagnetic waves. Write the frequency range for the standard AM broadcast.

MEDIUM

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 22 - Communication Systems>QUESTIONS>Q 31

Draw a schematic diagram showing the (i) ground wave (ii) sky wave and (iii) space wave propagation modes for electromagnetic waves. Write the frequency range for each of the following: (i) Standard AM broadcast (ii) Television (iii) Satellite communication.