Electromagnetic Radiation Online Practice Questions with Certified Solutions

Electromagnetic Radiation Online Practice Questions with Certified Solutions What is the relationship between energy and frequency in electromagnetic waves? Higher frequency means higher energy Which type of electromagnetic radiation is commonly used for communication signals? Radio waves What type of electromagnetic radiation causes sunburn? Ultraviolet (UV) radiation Which electromagnetic waves are used for night vision technology? Infrared radiation What determines the color of visible light? Its wavelength 2 Why do X-rays pass through soft tissues but not bones? Bones absorb more X-ray energy than soft tissues Which type of electromagnetic radiation is used in microwave ovens? Microwaves How does ultraviolet radiation affect human skin? It can cause tanning, sunburn, and increase the risk of skin cancer What type of electromagnetic radiation is used in fiber-optic communication? Infrared light What happens when electromagnetic radiation is absorbed by an object? The object gains energy, which can produce heat or other effects Which type of electromagnetic radiation is used to sterilize medical equipment? Ultraviolet (UV) radiation 3 What characteristic of electromagnetic waves makes them different from sound waves? They can travel through a vacuum, while sound waves need a medium What is the speed of electromagnetic radiation in a vacuum? The speed of light, approximately 3.00 × 108 meters per second Which type of electromagnetic radiation has the longest wavelength? Radio waves What happens to the wavelength of electromagnetic radiation as frequency increases? It decreases Which part of the electromagnetic spectrum is visible to the human eye? Visible light What is the primary source of electromagnetic radiation on Earth? The Sun 4 Which type of electromagnetic radiation is used in medical imaging to see inside the body? X-rays What property of electromagnetic waves allows them to travel through empty space? They do not require a medium Which electromagnetic waves have the highest energy? Gamma rays