Question

5. Define the following:-
a Radio waves
b. Infrared waves
c. WIFI​

Answer 1

Answer:

Radio waves- longest wavelength ,used for telecommunication

infrared-lies after red in the visible spectrum,used in ir cameras

wifi-Wireless Fidelity

Answer 2

Answer:

a) Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 gigahertz to as low as 30 hertz.

b)Infrared, sometimes called infrared light, is electromagnetic radiation with wavelengths longer than those of visible light. It is therefore generally invisible to the human eye, although IR at wavelengths up to 1050 nanometers s from specially pulsed lasers can be seen by humans under certain conditions

c)WiFi stands for Wireless Fidelity and is the same thing as saying WLAN which stands for "Wireless Local Area Network." Advertisement. See also: How to Boost Your WiFi Signal (Part 1) WiFi works off of the same principal as other wireless devices - it uses radio frequencies to send signals between devices.