the image of an object formed by a lens is of magnification -1. If the distance between the object and its image is 60 cm, what is the distance of the object from the optical center of the lens? Find the nature and focal of the lens. If the object is displaced 20 cm towards the optical enter of the lens, where would the image be formed and what would be its nature? Draw a ray diagram to justify your answer.
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Take the distance of the object from the optical center to be x unit ,then image distance is 60 -x now use the formula
m=v/u and find the Value of x
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