D. C. Pandey Solutions for Chapter: Basics of Communications, Exercise 23: Objective Problems [Level 2]
D. C. Pandey Physics Solutions for Exercise - D. C. Pandey Solutions for Chapter: Basics of Communications, Exercise 23: Objective Problems [Level 2]
Attempt the free practice questions on Chapter 11: Basics of Communications, Exercise 23: Objective Problems [Level 2] with hints and solutions to strengthen your understanding. Complete Study Pack for Engineering Entrances Objective Physics Vol 2 solutions are prepared by Experienced Embibe Experts.
Questions from D. C. Pandey Solutions for Chapter: Basics of Communications, Exercise 23: Objective Problems [Level 2] with Hints & Solutions
The waves used for Line of Sight (LOS) communication are

A radar has a power of and is operating at a frequency of . It is located on a mountain top of height . The maximum distance up to which it can detect object located on the surface of the earth (radius of the earth) is,

Which of the following four alternatives is not correct? We need modulation,

This question has Statement I and Statement II. Of the four choices given after the statements, choose the one that best describes the two statements.
Statement I: Sky wave signals are used for long distance radio communication. These signals are in general, less stable than ground wave signals.
Statement II: The state of ionosphere varies from hour to hour, day to day and season to season.

If and are carrier and modulating signals respectively, the modulation index is

carrier wave is amplitude modulated by the signal frequency . The channel width of this case is

The distance of coverage of a transmitting antenna is . Then, the height of the antenna is (given that radius of the earth),

Which one of the following is incorrect statement in the transmission of electromagnetic waves?
