an object is placed at the following distance from a convex lens of focal length 15CM. (1).35cm( 2). 30cm (3).20cm (
4).10cm . which position of the object will produce an mage of same size as that of the object
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Answer:
30 cm
Explanation:
image of same size is produced when the object is at a distance of double the focal length of lens
therefore,the object is at 2 × focal length = 30cm
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