What is the difference between real and imaginary images in optics?

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SUMMARY

The discussion clarifies the distinction between real and imaginary images in optics. A real image is formed when light rays converge and can be projected onto a screen, exemplified by viewing a computer screen. In contrast, an imaginary (or virtual) image occurs when light rays appear to diverge from a point, such as when observing oneself in a mirror. The discussion emphasizes that real images can be captured on a surface, while imaginary images cannot be projected, as they are perceived through reflection or refraction.

PREREQUISITES
  • Understanding of basic optics principles
  • Familiarity with ray diagrams in optics
  • Knowledge of reflection and refraction concepts
  • Basic comprehension of image formation in lenses and mirrors
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  • Research the principles of lens optics and image formation
  • Learn about ray tracing techniques in optical systems
  • Explore the applications of real and virtual images in photography
  • Study the differences between concave and convex mirrors
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This discussion is beneficial for students of physics, optical engineers, and anyone interested in understanding the fundamental concepts of image formation in optics.

momentum
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hi, i have an OPTICS question .

i am confused about the "real image" and "imaginary image". could not understand the difference. why a image will be "imaginary image" . images are images. why they have to be imaginary ?
 
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A real image is like when you look at your computer, and see the computer. It is actually there. A virtual or imaginary image is like when you stand two feet in front of the mirror on the wall. You see the 'image' of yourself about 4 feet away, but in reality the object (you) is not there.
 
In ray diagrams , if you draw the rays being reflected/refracted actually meeting, the image is real and if the lines are to be extended to meet , the image is virtual.
 

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