Optics questions This is a list of recently added questions about optics. Play optics quiz and see all the questions. What is Fata Morgana?An optical phenomenon. The Fata Morgana occurs because rays of light are bent when they pass through air layers of different temperatures in a steep thermal inversion, where an atmospheric duct has formed. It significantly distort the object on which it is based, often such that the object is completely unrecognizable. The Fata Morgana may be seen on land or at sea, in polar regions, or in deserts. It may involve almost any kind of distant object, including boats, islands, and the coastline.Created by: Ninjaivery hard 37% a chemical reactiona chemical reaction0an optical phenomenonan optical phenomenon16an optical illusionan optical illusion22a precipitationa precipitation5optical illusions riddles » Which organisms in nature can emit light?Firefly and honey fungus. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some bioluminescent bacteria and terrestrial invertebrates such as fireflies. In some animals, the light is bacteriogenic, produced by symbiotic organisms such as Vibrio bacteria; in others, it is autogenic, produced by the animals themselves.Created by: Tschukahard 47% firefly (insect)firefly (insect)2241honey fungus (mushroom)honey fungus (mushroom)137none of thesenone of these145firefly and honey fungusfirefly and honey fungus2299insects riddles » This optical phenomenon, appearing on misty mountainsides, is called...Brocken spectre. A Brocken spectre or mountain spectre, is the apparently enormous and magnified shadow of an observer, cast upon the surfaces of clouds opposite the sun. The head of the figure is often surrounded by the glowing halo-like rings of a glory—rings of coloured light that appear directly opposite the sun when sunlight meets a cloud of uniformly-sized water droplets. The phenomenon can appear on any misty mountainside or cloud bank.Created by: Tschukahard 41% Side rainbowSide rainbow59HaloHalo177Brocken spectreBrocken spectre190Sun DogsSun Dogs32mountains riddles » The bright circle around the Sun seen in the picture is known as a halo. What causes it?Refraction of light in ice crystals. Halo is the name for a family of optical phenomena produced by light interacting with ice crystals suspended in the atmosphere. Halos can have many forms, ranging from colored or white rings to arcs and spots in the sky. Among the best known halo types are the circular halo (properly called the 22° halo), Other common optical phenomena involving water droplets rather than ice crystals include the glory and the rainbow. Created by: Tschukavery hard 36% refraction of light in ice crystalsrefraction of light in ice crystals3596refraction in the lens of the eye or lensrefraction in the lens of the eye or lens3124refraction of light in water dropsrefraction of light in water drops2523reflections from the water surfacereflections from the water surface681atmosphere riddles » This is a rare phenomenon called iridescent clouds. It occurs in the clouds with ...Small droplets or ice crystals. The effect is similar to irisation. Iridescent clouds are a diffraction phenomenon caused by small water droplets or small ice crystals individually scattering light. Larger ice crystals do not produce iridescence, but can cause halos, a different phenomenon.Created by: Tschukaaverage 60% volcanic dustsvolcanic dusts2691sulphuric acidsulphuric acid2976detergent vaporsdetergent vapors2101small droplets or ice crystalssmall droplets or ice crystals11967sky riddles » A person who has 4 types of color receptors is called ...Tetrachromat. Man is usually sensitive to about 500,000 colors. Tetrachromacy is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cells in the eye. Organisms with tetrachromacy are called tetrachromats which can see up to 99 million shades. Created by: Tschukavery hard 38% Such people do not existSuch people do not exist418QuatroculusQuatroculus711ChromosomChromosom201TetrachromatTetrachromat843eyes riddles » Which of the following is the worst for eyesight during a sunny day?Wearing sunglasses without UV filter. Wearing sunglasses witout UV filter causes the pupils to dilate and eyes to absorb more UV rays than they normally would without the sunglasses. Hence, it's much better not to wear sunglasses at all, than to wear ones without UV filter.Created by: Ninjaihard 47% wearing sunglasses with UV filterwearing sunglasses with UV filter427wearing sunglasses without UV filterwearing sunglasses without UV filter5338not wearing sunglasses at allnot wearing sunglasses at all3986wearing sunglasses inside buildingswearing sunglasses inside buildings1393light riddles » In what process sky colors (including blue sky and red sun) are created?Rayleigh scattering, named after the British physicist Lord Rayleigh (John William Strutt), is an elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation. Created by: Ninjaivery hard 33% iridescenceiridescence636Rayleigh scatteringRayleigh scattering1811miragemirage654atmospheric refractionatmospheric refraction2300colors riddles » What is the name of this phenomenon?Iridescence is the phenomenon of certain surfaces that appear to gradually change colour as the angle of view or the angle of illumination changes. Examples of iridescence include soap bubbles, butterfly wings and sea shells, as well as certain minerals. It is often created by structural coloration (microstructures that interfere with light).Created by: Ninjaihard 55% advectionadvection231iridescenceiridescence1092rainbowrainbow260Morning GloryMorning Glory372clouds riddles » What kind of photos can be made with standard zoom lens mounted in the reversed position?Macro photography may be accomplished by mounting a lens in reverse, in front of a normally mounted lens of greater focal length. This method allows most cameras to maintain the full function of electronic and mechanical communication with the normally mounted lens, for features such as open-aperture metering.Created by: Shankar Kumaraverage 69% panoramicpanoramic2809nightnight906high-speedhigh-speed917macromacro10359lens riddles » Play optics quiz and see all the questions.