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 Form 4 Physics Questions and Answers on Thin Lenses

The diagram in figure 2 shows an object O laced in front of a converging lens. F and F’ are the principal foci
for the lens.
figthinlenses25520201601.JPG
The object is now moved along the principal axis until a virtual image is produced.
On the same diagram:
(i) Draw the object O in the new position along the principal axis.
(ii) Sketch rays to show formation of the virtual image.

 (5m 17s)
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