 Questions
 Physics
An object is in front of a converging lens with a focal length of 17.0 cm. The image seen has a magnification of −2.10.(Include the sign of the values in your answers.)
(a) How far is the object from the lens?
(b) If the object has a height of −15.0cm because it points below the principal axis (it is inverted), what is the image height hi?
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