UNIVERSE
SATELLITESICY BODIES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Radio waves
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Gamma Rays
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Microwaves
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Ultraviolet Rays
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Detailed explanation-1: -Cell phones emit low levels of non-ionizing radiation while in use. The type of radiation emitted by cell phones is also referred to as radio frequency (RF) energy.
Detailed explanation-2: -Cell phones use radio waves to communicate with cell towers, and these waves have wavelengths of approximately 10-1000 m, which are much too large to be ionizing. WiFi actually operates at quite precise frequencies, either 2.4 GHz or 5 GHz, which correspond to wavelengths of either 12 cm or 6 cm.
Detailed explanation-3: -Microwaves are a form of “electromagnetic” radiation; that is, they are waves of electrical and magnetic energy moving together through space. Electromagnetic radiation spans a broad spectrum from very long radio waves to very short gamma rays.
Detailed explanation-4: -Microwave ovens use electromagnetic waves that penetrate food, causing some molecules to vibrate and generate heat which is transferred throughout the food. Learn more about the electromagnetic spectrum.