MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -radio technology, transmission and detection of communication signals consisting of electromagnetic waves that travel through the air in a straight line or by reflection from the ionosphere or from a communications satellite.

Detailed explanation-2: -Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.

Detailed explanation-3: -Radio waves are used for wireless transmission of sound messages, or information, for communication, as well as for maritime and aircraft navigation.

Detailed explanation-4: -Radio Spectrum Radio waves are at the low-frequency portion of the electromagnetic spectrum used primarily for communications signals. Applications such as citizen band, AM and FM radio, radar, and television work depending on their position in the spectrum. Radio waves are separated into parts or bands by frequency.

Detailed explanation-5: -In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna.