Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
(a) At 2F1
(b) Between F1 and the optical centre 0 of the lens.
Which of the above two cases shows the use of convex lens as a magnifying glass? Give reasons for your choice.
(a) Object at 2F1 :
(b) Object between F1 and the optical centre O of the lens :
The case 2 shows the use of convex lens as a magnifying glass as the image formed is erect and magnified.
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