MP3_1 - -2a Determine the refractive index n of the glass...

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-2a: Determine the refractive index, n, of the glass plate using the data from section V2(a) and equation 3. = + ×( . ) ( . ) = . n 1 4 6 8mm 2 7 5mm 2 2 1 mm = . , = σd 0 1mm σR 1mm -3a: Tabulate the data from step V3(a), including columns for 1/o and 1/i. Using Excel, plot 1/I vs. 1/o Using LINEST, determine the intercept and the uncertainty in the intercept. Now calculate the experimentally determined focal length and the uncertainty in that value. Report this result as = f σf . Does the manufacturers stated focal length fall within the range established by = f σf ? 0(mm) I(mm) 1/o 1/I 180 45.7 5.56E-03 0.021882 190 40.3 5.26E-03 0.028139 200 36.4 5.00E-03 0.027473 210 33.4 4.76E-03 0.02994 220 31.4 4.55E-03 0.031847 230 28.9 4.35E-03 0.034502 240 27.4 4.17E-03 0.036496 250 25.9 4.00E-03 0.03861 260 25 3.85E-03 0.04 270 24.2 3.70E-03 0.041322 280 23.6 3.57E-03 0.042373 290 22.6 3.45E-03 0.044248 Slope -10.0431 0.078432 y-intercept Uncertainty in Slope 0.42366 0.001864 Uncertainty in y-intercept =( ± ) f 48 1 mm Yes, manufactures stated focal length fall within the range of the experiment.

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This note was uploaded on 09/28/2011 for the course PHY 257 taught by Professor Ta during the Spring '10 term at SUNY Buffalo.

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MP3_1 - -2a Determine the refractive index n of the glass...

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