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real image/imaginary image

 
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Jun18-05, 11:26 PM   #1
 

real image/imaginary image


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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Jun19-05, 01:56 AM   #2
 
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.
 
Jun19-05, 04:05 AM   #3
 
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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