1.

You are given a convex lens of focal length 30 cm. At what distance from the lens should you hold a candle flame to observe a virtue image of the flame?

Answer»

Solution :When the object of placed within the FOCUS of a CONVEX lens, the image formed is virtue, erect and MAGNIFIED. Hence the candle flame must lie between 0 to 30 CM from the lens to observe the virtual image.


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