Asked by | 16th Jan, 2009, 06:51: PM
To draw the image we use some particular rays that are easy to draw. But as such you can draw a ray from every part of the object to get the final image. There is not just one ray.
In this case we do not use the ray drawn through the optical centre.
When half the lens is covered the number of rays that you can draw becomes less so the intensity of the image decreases. But you will still see a full image.
Answered by | 17th Jan, 2009, 11:02: AM
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