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Virtual Image vs. Real Image- NEED HELP IMMEDIATELY DESPERATE!!!!!

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Date Posted: 5/16/2008 7:49:22 AM  Status: Live
Virtual Image vs. Real Image- NEED HELP IMMEDIATELY DESPERATE!!!!!
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Question Details:
Distinguish between a virtual image and a real image.

PLEASE BE SPECIFIC AND CLEAR FOR ME TO UNDERSTAND BETTER..

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Date Posted: 5/16/2008 8:08:12 AM  Status: Live
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Virtual image

Real image

1)      it may be equal ,smaller of greater than the size of object but erect     

 

1)      It may be equal ,smaller of greater than the size of object but inverted

 

2)      It con not be obtain on the screen

2)      It can be obtained on the screen

 

3)      The rays of light originating from the object after reflecting from the mirror do not meet on the image rather these appear to be meeting at the image

3)      The rays of light originating from the object after reflection from the mirror actually meet at the image

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Date Posted: 5/16/2008 8:37:48 AM  Status: Live
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Response:
The two types of images are virtual image and a real image.We can ditinguish between them as follows:
Our visual system ,starting with the retina and ending with the visual cortex at the rear of our brain,automatically and subconciously processes the information provided by the light.That system identifies edges,orientations,textures,shapes,and colors and then rapidly brings to your conciousness an image(a reproduction derived from light) of the object;you percive and recognize the object as being in the direction from which the light rays came and at the proper distance.
If the light rays have been reflected toward you from a standard flat mirror,the object appears to be behind the mirror because the rays you intercept come from that direction.Of course the object is not back there.This type of ,image,which is called a virtual image,truly exists only within the brain but nevertheless is said to exist at the percieved location.
A real image differs in that it can be formed on a surface,such as a card or a movie screen.You can see a real image(otherwise movie theaters would be empty),but the existence of the image does not depend on your seeing it and it is present even if you are not.



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