18. (a) A thin converging lens forms a : (i) Real magnified image (ii) Virtual magnified image of an object placed in front of it.
(a) Write the position of the objects in each case.
(b) Draw labelled ray diagrams to show the image formation in each case.
(c) How will the following be affected on cutting this lens into two halves along the principal axis ?
(i) Focal Length
(ii) Intensity of the image formed by half lens.
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Explanation:
a) (i) Between F and 2F of a lens.
(ii) Within the focal length.
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