Image formation by thin lenses
If the foot of the object crosses the principal axis, two of the three rays used to locate image should be drawn for both the tip and the foot of the object.
In books, we use ray diagrams to represent images formed by thin lenses. Ray diagrams are straight lines with arrows that shows direction of light rays. Points to note when drawing ray diagrams Real rays and real images are drawn using solid lines virtual rays and virtual images are drawn in broken lines To locate the image, two of the three important rays are drawn from the tip of the…
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