Need to know
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what exactly do you mean by "resolution of an image in physics"???
Resolution of picture is calculated only in 2 ways, like below..
giving dimensions of an image e.g., 800 X 600 (length X breadth)
or in pixels 1.3MegaPixel or 2.5 MP (total pixels in the image)
40 X 60 size image consists 2400 pixels,
so u can say resolution of it is either as 40 X 60 or as 2400 pixels.
Resolution of picture is calculated only in 2 ways, like below..
giving dimensions of an image e.g., 800 X 600 (length X breadth)
or in pixels 1.3MegaPixel or 2.5 MP (total pixels in the image)
40 X 60 size image consists 2400 pixels,
so u can say resolution of it is either as 40 X 60 or as 2400 pixels.
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Resolution of image by an optical device is a measure of the least separation/angular seperation between two objects whose images by the optical device appear distinct. What device (telescope, mcroscope,..) do you have in mind