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Guyz.. can u give the summary of Refraction of light on curved surfaces! 10th std..
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Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air densityas a function of height.[1] This refraction is due to the velocity of light through air, decreasing (the refractive index increases) with increased density. Atmospheric refraction near the ground produces mirages. Such refraction can also raise or lower, or stretch or shorten, the images of distant objects without involving mirages. Turbulentair can make distant objects appear to twinkle or shimmer. The term also applies to the refraction of sound. Atmospheric refraction is considered in measuring the position of both celestial and terrestrial objects.
Astronomical or celestial refraction causes astronomical objects to appear higher above the horizon than they actually are. Terrestrial refraction usually causes terrestrial objects to appear higher than they actually are, although in the afternoon when the air near the ground is heated, the rays can curve upward making objects appear lower than they actually are.
Refraction not only affects visible light rays, but all electromagnetic radiation, although in varying degrees. For example, in the visible spectrum, blue is more affected than red. This may cause astronomical objects to appear dispersed into a spectrum in high-resolution images.
Astronomical or celestial refraction causes astronomical objects to appear higher above the horizon than they actually are. Terrestrial refraction usually causes terrestrial objects to appear higher than they actually are, although in the afternoon when the air near the ground is heated, the rays can curve upward making objects appear lower than they actually are.
Refraction not only affects visible light rays, but all electromagnetic radiation, although in varying degrees. For example, in the visible spectrum, blue is more affected than red. This may cause astronomical objects to appear dispersed into a spectrum in high-resolution images.
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hey frnd.....
A lens is formed when a transparent material is bounded by two surfaces of which one
or both surfaces are spherical. Lenses can be of various types. Biconvex lens, Biconcave
lens, Plano convex lens, Plano concaves lens and concave – convex lens.
In lenses, light undergoes the phenomena of refraction. If u,v and f are the object distance,
Image distance and focal length then the lens formula is
In concave lens, only virtual image is formed.
In convex lens both virtual and real images are formed.
The position of image changed in convex lens by changing the position of object.
HOPE THIS HELP YOU ☺☺❤❤❤
A lens is formed when a transparent material is bounded by two surfaces of which one
or both surfaces are spherical. Lenses can be of various types. Biconvex lens, Biconcave
lens, Plano convex lens, Plano concaves lens and concave – convex lens.
In lenses, light undergoes the phenomena of refraction. If u,v and f are the object distance,
Image distance and focal length then the lens formula is
In concave lens, only virtual image is formed.
In convex lens both virtual and real images are formed.
The position of image changed in convex lens by changing the position of object.
HOPE THIS HELP YOU ☺☺❤❤❤
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