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Microwave: Quiz


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Question 1: Some but not all studies suggest that long-term exposure may have a ________ effect.

Question 2: [1] This broad definition includes both ________ and EHF (millimeter waves), and various sources use different boundaries.
MicrowaveVery high frequencyUltra high frequencyL band

Question 3: Microwave ovens became common kitchen appliances in Western countries in the late 1970s, following development of inexpensive ________.
Strategic bombing during World War IIJohn Randall (physicist)Radiation LaboratoryCavity magnetron

Question 4: During ________, it was observed that individuals in the radiation path of radar installations experienced clicks and buzzing sounds in response to the microwaves radiation.
World War IICollaboration with the Axis Powers during World War IISoviet occupationsSecond Sino-Japanese War

Question 5: A maser is a device similar to a ________, except that it works at microwave frequencies.
HeliumX-rayLaserLaser applications

Question 6: Before the advent of ________ transmission, most long distance telephone calls were carried via networks of microwave radio relay links run by carriers such as AT&T Long Lines.
Optical fiberOpticsTransparency and translucencyGlass

Question 7: The lens and ________ of the eye are especially vulnerable because they contain no blood vessels that can carry away heat.
ScleraIris (anatomy)RetinaCornea

Question 8: Wide Area ________ Wireless Access: MBWA protocols based on standards specifications such as IEEE 802.20 or ATIS/ANSI HC-SDMA (e.g.
Mobile phoneT-MobileMobile broadbandWireless modem

Question 9: Perhaps the first use of the word microwave in an astronomical context occurred in 1946 in an article "Microwave Radiation from the Sun and Moon" by ________ and Robert Beringer.
Robert H. DickeGeneral relativityPhysical cosmologyCosmic microwave background radiation

Question 10: Some ________ networks, like GSM, use the low-microwave/high-UHF frequencies around 1.8 and 1.9 GHz in the Americas and elsewhere, respectively.
Smartphone4GMobile phoneUniversal Mobile Telecommunications System


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