A real image 2/3rd of the size of an object is formed by a convex lens when
the object is at a distance of 12 cm from it. Find the focal length of the
lens.
(
1/5/3
2 ho
6
st
ve th
-
hi= 2 ho
hišam.
12
3
8
- 6 to 4
-12
to yo
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