Question

gibly drawn to scale ray diagrams showing h ation ng configuration: converging lens of 15em fixed focal length em in length. An object is placed at 0.0 em, can be detected is placed somewhere on an optical bench of 240 and a screen is placed where ever a focused image Use the illustrations on the following pages to construct one ray diagram for each of the following situations, using the basic configuration given above. Situation a) Measuring from the object end of the bench, determine one position to locate the lens so that the image on the screen will be in focus. Draw and label these on the illustration labelled Situation a). Be sure to show the correct magnification and scale of the image. (Refer to the typical ray diagrams given previously.) inlunlimml lnnnulul llllululul 20 Object Height 10 cm CTION BY THIN LENSES TYPICAL RAY DIAGRAMS FOR LENSES Below are four ray diagrams showing the light path, focal points,and object and image locations for a convex lens. Compare these to the previous samples for mirors. locations tor a convex lens. Compare these to a) Object is outside the radius of curvature; the image is inverted, and is smaller than the object (magnification is less than 1 and greater than 0) Object mage Object is at the center of curvature (exactly 2x focal length); the image is inverted, and has the same size as the object. (magnification - 1) Image Object is between the focal point and the radius of curvature; a real image is formed which is larger than the object and inverted. Object Image hiect is inside the focal point, no real image is formed; the image is virtual. It cannot be projected but it can be seen with the eyes, and will appear to be on the same side of the lens as the object (this is the "magnifying glass" effect of Sherlock Holmes fame..) Magnification would be negative object

Answer 1

Given,

focal length, f = 15 cm

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