when an object is placed at a distance of 36cm from
a conevex lens, an image of the same size as the object
is formed. What will be the nature of image formed
when the object is
placed at a distance of (a)10cm from the lens? (b)20cm from the lens?
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Explanation:
When the object is placed at a distance of 10 cm from the lens, the object lies within the focus. Hence, the image formed is virtual, erect and magnified.
(b) When the object is placed at a distance of 20 cm from the lens, the object lies between f and 2f. Hence, the image formed is real, inverted and magnified.
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