. Draw ray diagrams to show the formation of a three times magnified

(i) real image

(ii) virtual image of an object kept in front of a converging lens. Mark the positions of object, F, 2F, O and position of image clearly in the diagram.

(iii) An object of size 5 cm is kept at a distance of 25 cm from the optical centre of a converging lens of focal length 10 cm. Calculate the distance of the image from the lens and size of the image.



Best Answer

Ans: i. Magnified real image


ii. Magnified virtual image


iii. Here    h1 = 5 cm,       u = – 25 cm,    f = 10 cm         v = ?    h2 = ?

Using the formula,


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