A convex lens has a focal length of 12 cm. At which of the following positions should an object be placed so that this convex lens may act as magnifying glass ? [1] (a) 26 cm (b) 17 cm (c) 9 cm (d) 24 cm
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Answered by
79
Answer:(c) 9cm
Explanation:because a magnified image can only be formed when the object is placed between the optical centre and the first focal point.
Therefore as per the question the object must be placed as near as possible to the optical centre and 9 cm
Is the nearest distance from the optical centre.
Answered by
24
Answer:
9 is correct answer
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