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summary18 - o positive on the side of the lens from which...

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Summary Lecture 19 Summary Lecture 19 C L i l Convex Lens: converging lens positive focal length Images are: virtual or real virtual or real upright or inverted magnified or reduced Concave Lens: diverging lens negative focal length Images are: virtual upright d d reduced

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Conventions: 1. Positive f => convex lens 1. Positive f convex lens Negative f => concave lens 2. h i , h o positive if above the optical axis; negative if below.
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Unformatted text preview: o positive on the side of the lens from which the light is coming. 4. d i positive if on opposite side (the other side than d o ) Magnification: M = h i /h o = - d i /d o Lens Equation: 1/d i + 1/d o = 1/f Image: Real if d > 0; virtual if d < 0 Real if d i 0; virtual if d i Upright if M > 0; inverted if M < 0 Magnified if |M| > 1; Reduced if |M|<1...
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