1. Step 1: Determine what kind of image will form based on the placement of the object inside the focal length?
2. Step 5: What do you notice about the size of the image? Is this image real or virtual, and how do you know?
1. Is the resulting image for the concave mirror real or virtual; and, how do you know? Use your measurements to calculate the magnification.
2. For the concave mirror, use the lens equation, magnification equation, and the provided distances (not any measured image distances) to calculate si and hi. How do your measured values compare?
Is your image for Convex Lens A real or virtual, and how do you know? Use your measurements to calculate the magnification.
For Convex Lens A, use the lens equation, magnification equation, and the provided distances to calculate si and hi. How do your measured values compare?
3. Measure and record the image height and image distances for Convex Lens B.
Is the image formed through Convex Lens B real or virtual, and how do you know? Use the lens equation to find si and hi, and compare this to the actual measurements.
1. Step 1: Look into the side of the mirror that bulges out toward you. Write down how the image appears (orientation and magnification) and how many objects you can see in the background.
2. Step 2: Hold the mirror close to your face, and then gradually move it away. Note what happens to your image as you get farther from the mirror.
3. Step 3: Now turn the mirror over and look into the side that bends inward. Note down how the image appears (orientation and magnification) and how many objects you can see in the background.
4. Step 4: Place this mirror as close as you can to your eyes and note what you see differently. Write down how the orientation and magnification change as you move the mirror farther away.
1. What kind of mirror did you use in Procedure/Observations 1—is it convex or concave?
2. Is your image in this type of mirror a virtual image or a real image? How do you know?
3. Did the convex mirror give you a good view of a lot of objects to either side of you? Where have you seen mirrors like this used, and what do you think makes them useful?
4. Is the other side of the mirror convex or concave? Comment on the magnification of this side of the mirror when it is held very close to your eyes. How does the magnification change as you move it away from your eyes?
5. Is this a virtual image or a real image? Draw a ray diagram for a concave mirror with the object placed inside the focal length (so < f) to verify your answer.
Questions
1. Describe the general orientation and magnification of the images formed through the convex lens before the image became blurry (this occurs when the image distance is larger than the distance from the lens to your eye).
2. What kind of image forms through the convex lens in the above situation, and how do you know?
3. How does the image of the window appear through the lens at this distance? What kind of image is this, and how do you know?
4. At what distance must you position the screen in order to view a clear image on the paper?
5. Explain why the screen allows you to view this kind of image, but would not work in viewing the images from Procedure 1.
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