An indication that light is a wave is A that it has dark bands in the diffraction pattern B that it passes through glass C that it reflects off surfaces D its high speed The colors of an oil slick indicate that A light is a wave B light bends when entering material C light changes its wavelength when passing through oil D oil is made of many different chemicals with different colors The index of refraction measures A the frequency of light B the speed of light C the period of light D density of the glass Light waves are A longitudinal B transverse C circular The resolution of a human eye is about A 4mm B 2cm C 1 micron D 1 60 degree Which of the following has the lowest index of refraction A water B glass C air D crystal As the wavelength of light decreases the frequency A decreases B increases C stays the same In one millionth of a second light will travel A about 1 foot B about 1000 feet C from one side of a computer chip to the other D from the Earth to the Moon A stop sign is bright when you shine the headlamps of your car on it It most likely is covered with A fluorescent paint B phosphorescent paint C tritium D small glass spheres Diamonds sparkle in many colors because A light travels very slowly B light travels very fast C there is color dependent absorption D light velocity depends on color Which of the following are retroreflectors A bicycle reflectors B human eyes C stop signs D animal eyes E All of the above Two soap bubbles from the same soap appear different colors They probably have A different sizes B different absorption C different temperature D different thickness If c is the speed of light in vacuum then the speed of light in glass is approximately A 1 5 c B 2 3 c c c D 0 999 c Stealth bombers are undetected by radar in part because A of their low heat emission B of their high speed C they are made of translucent materials D of the absence of corner reflectors Rainbows show different colors because A droplets of water have different sizes B in water different frequencies have different velocities C the direction of light spreads because the wavelength is short D droplets of water change the color of air molecules Which of the following is polarized A blue sky light B direct sunlight yellow C light from a candle D light from a TV screen A fiber can send much more information per second than a wire because A light has a very high frequency B electricity travels better in glass than in a wire C sound travels very rapidly in glass D light travels faster than electricity Which color of light would give the highest number of bits per second in fiber optics A red B white C blue D infrared Shannon is famous for having invented or discovered A CPS B Global Hawk C the sound channel D the bit The human eye has cones that detect A red yellow blue B cyan magenta yellow C yellow green red D green blue red People squint to see better because squinting A reduces the light B bends the lens to make it stronger C reduces the blur size D They don t see better They only think that they do Old people need reading glasses because their A pupils can t contract as well B eyes become less sensitive to visible light C lenses become less flexible D they forget how to read Red eye in photographs come from A the film detecting IR B poor focus on the eye C light of the flash reflecting off the retina the back of the eye D light of the flash reflecting off the cornea the surface of the eye Red eye demonstrates that A light is a wave B air absorbs blue more than red C camera film is sensitive to red D the eye is a retroreflector Your eye has A one lens called the lens B two lenses the lens and the cornea C two lenses the lens and the retina D no lenses but behaves like a pinhole camera Light is polarized when it bounces off choose all that apply A water B glass C air D all of the above Sunglasses can help you see a fish underwater because A reflected light is polarized B light from the fish is polarized C they dim the light making your pupils dilate D they cut the blue light of the water surface Polaroids are used for 3 D movies because A they reduce glare from the surface B they give a different image to each eye C they polarize the light D they reduce the dispersion Stress in plastic can be detected by looking at A the transmission of different colors B the reflection of different colors C interference D polarized light crossed polaroids In the pinhole camera more blurring occurs if A the hole is made very large but not if it is very small B the hole is made very small but not if it is made very large C the hole is either very large or very small D Never since there is no lens in a pinhole camera Holograms depend on the fact that light A contains red green and blue B is quantized C is a wave D can be focused A successful fisherman will throw the spear A above the fish image B below the fish image C right at the fish image D It depends on how close the fish is To make a spy satellite that can read a license plate you would have to A put it in a higher orbit B cover it with a polarizing filter C use a larger mirror D Do nothing they already can read license plates The wavelength of visible light is closet to the diameter of A a human hair B a red blood cell C an atom D a nucleus The Keck telescope is powerful because A it gives larger magnification B it can use UV light C it has a bigger mirror to collect light D it has a bigger focal length than others When we say a man is color blind we usually mean that A everything looks black and white or gray B unlike others he can t see ultraviolet or infrared C he can sense only three colors D he can t distinguish red from green The Keck uses what to focus light A computers B a lens C a mirror D It doesn t focus light Light in a vacuum goes 1 foot every nanosecond In water in one nanosecond it will go about A 1 foot B 1 5 feet C 0 66 foot D 0 feet light doesn t travel through water Present day 3 D movies make use of which technology A polarizers B holograms C dispersion D mirages A computer screen does not have spots that are colored A red B …
View Full Document
Unlocking...