(i) Define focal length of a spherical lens. (ii) A divergent lens has a focal length of P \( 30...
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0(i) Define focal length of a spherical lens.
(ii) A divergent lens has a focal length of
P \( 30 \mathrm{~cm} \). At what distance should an object of height \( 5 \mathrm{~cm} \) from the optical centre of the lens be placed, so that its image is formed \( 15 \mathrm{~cm} \) away the lens? Find the size of the image also.
(iii) Draw a ray diagram to show the formation of image in the above situation.
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