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28. Optics: The lens equation (1 over p) + (1 over q) = (1 over f) relates the distance p of an object from a lens, the distance q of the image of the object from the lens, and the focal length f of the lens. What is the distance of an object from a lens if the image of the object is 5 centimeters from the lens and the focal length of the lens is 4 centimeters?

Question

Show work!!! :D Medal will be rewarded! :D 
28. Optics: The lens equation (1 over p) + (1 over q) = (1 over f) relates the distance p of an object from a lens, the distance q of the image of the object from the lens, and the focal length f of the lens. What is the distance of an object from a lens if the image of the object is 5 centimeters from the lens and the focal length of the lens is 4 centimeters?

mertsj · Answer

You need to restate your lens equation.  It must have some typos in it.

firejay5 · Answer

the question doesn't have a typo in it @Mertsj

mertsj · Answer

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