Plot 1/d, versus 1/d, and find the best-fit line (linear fit). This will give a straight line with the x- and y-intercep

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Plot 1 D Versus 1 D And Find The Best Fit Line Linear Fit This Will Give A Straight Line With The X And Y Intercep 1 (62.68 KiB) Viewed 28 times

Plot 1 D Versus 1 D And Find The Best Fit Line Linear Fit This Will Give A Straight Line With The X And Y Intercep 2 (54 KiB) Viewed 28 times

Plot 1/d, versus 1/d, and find the best-fit line (linear fit). This will give a straight line with the x- and y-intercepts equal to 1/f. Record the intercepts (including units) here: y-intercept = 1/f = x-intercept = 1/f = te: You can plot the data and find the best-fit line on paper or on a computer. For each intercept, calculate a value off and record it in Table 13.2. Find the percent difference between these two values off and record them in Table 13.2. Average these two values off. Find the percent difference between this average and the focal length that you found in Part I. Record these data in Table 13.2. Table 13.2: Focal Length Result from x-intercept Result from y-intercept % difference between results from intercepts Average of results from intercepts Result from Part I % difference between Average of results from intercepts and result from Part I f
2. Use the Equation 13.1 to calculate the focal length. 9.5 сиг 1 Part II: Object Closer Than Infinity In this part, you will determine the focal length of the mirror by measuring several pairs of object and image distances and plotting 1/d, versus 1/d. 50cm Hall-screen Light source Figure 13.2 Procedure 1. Place the light source and the mirror on the optics bench 50 cm apart with the light source's crossed-arrow object toward the mirror and the concave side of the mirror toward the light source. Place the half-screen between them (see Figure 13.2). 2. Slide the half-screen to a position where a clear image of the crossed-arrow object is formed. Measure the image distance and the object distance. Record these measurements (and all measurements from the following steps) in Table 13.1. 3. Repeat step 2 with object distances of 45 cm, 40 cm, 35 cm, 30 cm, 25 cm. 4. With the mirror at 25 cm from the light source and a clear image formed on the half-screen, measure the object size and image size. To measure the image size, hold a small scrap of paper against the half-screen and mark two opposite points on the crossed-arrow pattern (see Figure 13.3). If at least half of the pattern is not visible on the screen, have your partner slightly twist the mirror to bring more of the image into view. Remove the paper and measure between the points. Measure the object size between the corresponding points directly on the light source. Table 13.1: Image and Object Distances OM 1/4 1/4, Image Size Object Size 50.0 cm 38.0 22.0 45.0 40.0 cm 27.0 35.0 cm 22.0 30.0 cm 17 25.0mm 11 3.0 4.0cm Image size Figure 13.3