Question

the magnification of an image formed by a lens is -1 if the distance between the object and image is 60 cm and what is the distance of the object from the optical centre of the lenses find the nature and focal length of the lens if the object that displays 20 CM towards the optical centre of the lens where would the image be formed and what would be its nature draw a ray diagram to justify your answer

Answer 1

now what is population in statistics ????

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