CBSE Class 10 Science 2017 Outside Delhi Term II Set 2 Paper

Question : 11 of 12

Marks: +1, -0

Draw ray diagrams to show the formation of three times magnified (a) real, and (b) virtual image of an object by a converging lens. Mark the positions of

O, F

and

2 F

in each diagram.

Solution:

(a) For real image : To get three times magnified image, the object is placed between

{\F}_1 & 2 {\F}_1

(b) For virtual image : To get three times magnified image, the object is placed between the

F_1

and optical centre

O

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