a concave lens magnifies 5 times. if the object is displaced 3 cm backwards, then, magnification remains just 2 times. find the focal length of lens and first position of object.
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a concave lens magnifies 5 times. if the object is displaced 3 cm backwards, then, magnification remains just 2 times. find the focal length of lens and first position of object.
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Answer: a concave lens magnifies 5 times. if the object is displaced 3 cm backwards, then, magnification remains just 2 times. find the focal length of lens and first position of object.
Explanation:
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