A 2.0-cm-tall object is 20 cm in front of a converging lens that has a 15 cm focal length. a. Use ray tracing to find if the image is real or virtual, inverted or upright, and if the image is larger or smaller than the object. Calculate the image position and height. Using the thin lens equations b. 1+1=3 do di f m= d-the di ho do hi 一
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- C=18A certain slide projector has a 145 mm focal length lens. How far away is the screen, if a slide is placed 150 mm from the lens and produces a sharp image? m If the slide is 23.4 by 35.1 mm, what are the dimensions of the image? (Enter your answers from smallest to largest in cm.) cm by cmA camera lens used for taking close-up photographs has a focal length of 21 mm. The farthest it can be placed from the film is 33.3 mm. a. What is the closest object that can be photographed? mm b. What is the magnification of this closest object? X
- B. CONVERGING LENSES: After performing this activity, the students should be able to: Sketch the location of the image in the concave mirror, measure the distance and the height of the image, and describe the object and the image in every case. MATERIALS: Rufer PROCEDURES 2 Construct the image of the following, given the focal length, distance of the object (do) (f) and height of the object (ho) in centimeters. Describe the location of both the object and the image being constructed. Determine the exact distance and the height of the image. identify the case number of each. Complete the table below. NOTE: Arrows that represent the secondary axes should be in red color, arrow that represent the object and the image is in blue color as well as the line that shows the bending of light ray, the rest of the construction is in black color. That is why you will be needing 3 colored ballpen for this activity. Use another sheet of bond paper for your construction. Use accurate maeasure. three…q37 An object (height = 8.2 cm) and its image are on opposite sides of a converging lens. The object is located 19.0 cm from the lens. The image is located 5.5 cm from the lens. Determine the magnification. Enter the numerical part of your answer to two significant figures. Hint: Remember that the sign of the magnification is significant.