(b) An object is placed 15 cm
in front of a lens A, the
details of the image are
given below. The process
is repeated for a different
lens B
Lens A Real, inverted,
magnified and at a great
distance
Lens B Real, inverted and
same size as the object
Estimate the focal length
of each lens ana stale
whether it is converging or
diverging.
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Answer:
(a) The object is placed at focus, so f = 10 cm.
(b) The object is placed at a distance twice the focal length, so f = 5 cm.
(c) Convex lens (since image is real).
(d) Convex lens (since image is real).
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