answer 16th question. plzzzzz no links
Q.16. A student has to project a three times magnified mage of a candle flame on a wall. Name the type of the lens (converging/ diverging) required for the purpose. If the candle flame is at a distance of 6 m from the wall, find the focal length of the lens.

Dear student ,
For three times magnified image student should use converging lens i.e. CONVEX LENS.
Focal length :


So the focal length is 9/8 m.


Regards

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