Question

(1) define optical centre of a spherical lens
(2) a divergent lens has a focal length of 20cm at what distance should an object of height 4 cm from the optical centre of the lens be placed so that its image is formed 10 cm away from the lens find the size of the image also
(3) draw ray diagram to show the formation of image in above situation and not the nature of image,position of image and size of image.

Answer 1

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