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An object is moved towards a convex lens to a certain distance so that the magnification of the image changes from -2 to +2. If the focal length of the lens is 30 cm, then find the distance through which the object is moved towards the lens.
Asked by सुधाकर | 03 Mar, 2017, 05:56: PM
answered-by-expert Expert Answer

Hi Rimjhim,


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Answered by | 03 Mar, 2017, 06:29: PM

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