A lens has a power of + 1.0D.Name the type of lens and its focal length
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lens diverges the rays of a parallel beam of
light.
(b) A 2.0 cm tall object is placed perpendicular to the
principal axis of a concave lens of focal length 15 cm.
At what distance from the lens, should the object be
placed so that it forms an image 10 cm from the lens?
Also find the
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