# Lab E8 - McGee 1 Lab E8 Resistor Inductor Circuits Allison...

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McGee 1 Lab E8 Resistor Inductor Circuits Allison McGee Mr. Fedorchak Thursday 2:00- 4:50pm Partners: Stevie Whitehead Trey Smith

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McGee 2 Abstract : The purpose of this experiment is to determine the focal length of a lens and mirror using the thin lens equation. Our known values for the focal point of the lens is . 05m and our experimental value for the lens is .0498m. Our percent difference was .40%. The known value for the focal point for mirrors is .095m and the experimental value was .0941m and our percent difference .95%. Introduction : When light strikes a surface, the light rays will reflect (mirror) or refract (lens) to form images. These images are referred to as “real” if it is possible to see them focused on a view screen or “virtual” if it is only possible to see the imahe by looking into the mirror. When measured from either a lens or a mirror, the distance to the image (q) is related to the distance to the object (p) by the following equation known as the thin lens equation. (1/f)=(1/p)+(1/q) The focal length (f) is a characteristic of the lens/mirror and is by definition the position of the image when the object is at an infinite distance away from the lens/mirror. When working with the lens, the object distance, “p” will always be a positive number. A real image is formed on the other side of the lens and will have a positive number for “q”. A virtual image is formed in the same side of the lens as the object and will have a negative number for “q”. In looking at lens, there are two types: convex and concave.
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Lab E8 - McGee 1 Lab E8 Resistor Inductor Circuits Allison...

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