ELECTRONIC COMMUNICATIONS EXAM
SCRIPT FINAL PAPER 2026 COMPLETE
SOLVED QUESTIONS COMMUNICATION
SYSTEMS INSIGHT TOOLKIT
◉ What does the electromagnetic spectrum encompass?
Answer: All frequencies of electromagnetic signals
◉ How is frequency defined?
Answer: The number of cycles of a repetitive wave occurring in a
given period
◉ What unit is frequency measured in?
Answer: Hertz (Hz)
◉ What does wavelength represent?
Answer: The distance occupied by one cycle of a wave
◉ What is the formula for calculating wavelength?
Answer: Wavelength (λ) = speed of light ÷ frequency
,◉ What is the speed of light in meters per second?
Answer: 3 × 10^8 meters/second
◉ What is the wavelength if the frequency is 4 MHz?
Answer: 75 meters
◉ What frequency range is classified as Extremely Low Frequencies
(ELF)?
Answer: 30-300 Hz
◉ What frequency range includes AM radio?
Answer: Medium Frequencies (MF) 300-3000 kHz
◉ What frequency range is associated with FM radio broadcasting?
Answer: Very High Frequencies (VHF) 30-300 MHz
◉ What frequency range is used for cellular phones?
Answer: Ultra High Frequencies (UHF) 300-3000 MHz
◉ What is the frequency range of the electromagnetic spectrum?
Answer: From 30 Hz to 300 GHz
, ◉ What are the applications of microwaves and super high
frequencies (SHF)?
Answer: Satellite communication, radar, wireless LANs, microwave
ovens
◉ What is the frequency range for Extremely High Frequencies
(EHF)?
Answer: 30-300 GHz
◉ What types of light waves are included in the optical spectrum?
Answer: Infrared, visible spectrum, ultraviolet
◉ What is infrared radiation used for?
Answer: In astronomy, weapons guidance, TV remote controls, and
fiber-optic communication
◉ What does the visible spectrum refer to?
Answer: Light that we can see, with red as low-frequency and violet
as high-frequency light
◉ What is the primary use of ultraviolet light?
Answer: Medical applications
SCRIPT FINAL PAPER 2026 COMPLETE
SOLVED QUESTIONS COMMUNICATION
SYSTEMS INSIGHT TOOLKIT
◉ What does the electromagnetic spectrum encompass?
Answer: All frequencies of electromagnetic signals
◉ How is frequency defined?
Answer: The number of cycles of a repetitive wave occurring in a
given period
◉ What unit is frequency measured in?
Answer: Hertz (Hz)
◉ What does wavelength represent?
Answer: The distance occupied by one cycle of a wave
◉ What is the formula for calculating wavelength?
Answer: Wavelength (λ) = speed of light ÷ frequency
,◉ What is the speed of light in meters per second?
Answer: 3 × 10^8 meters/second
◉ What is the wavelength if the frequency is 4 MHz?
Answer: 75 meters
◉ What frequency range is classified as Extremely Low Frequencies
(ELF)?
Answer: 30-300 Hz
◉ What frequency range includes AM radio?
Answer: Medium Frequencies (MF) 300-3000 kHz
◉ What frequency range is associated with FM radio broadcasting?
Answer: Very High Frequencies (VHF) 30-300 MHz
◉ What frequency range is used for cellular phones?
Answer: Ultra High Frequencies (UHF) 300-3000 MHz
◉ What is the frequency range of the electromagnetic spectrum?
Answer: From 30 Hz to 300 GHz
, ◉ What are the applications of microwaves and super high
frequencies (SHF)?
Answer: Satellite communication, radar, wireless LANs, microwave
ovens
◉ What is the frequency range for Extremely High Frequencies
(EHF)?
Answer: 30-300 GHz
◉ What types of light waves are included in the optical spectrum?
Answer: Infrared, visible spectrum, ultraviolet
◉ What is infrared radiation used for?
Answer: In astronomy, weapons guidance, TV remote controls, and
fiber-optic communication
◉ What does the visible spectrum refer to?
Answer: Light that we can see, with red as low-frequency and violet
as high-frequency light
◉ What is the primary use of ultraviolet light?
Answer: Medical applications
