# 257-MP3 Manual Addendum rev 2 - calculating the percent...

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PHY-257 MP3 Manual Addendum VI-For the Report VI-2a: Determine the refractive index, n, of the glass plate using the data from section V2(a) and equation 3. VI-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 f σ ± . Does the manufacturers stated focal length fall within the range established by f f σ ± ? VI-3b: The theoretical value of m is given by i m o = . Calculate m from your data of step V3(b) using both the image data and the locations of the object/lens/image. Using the uncertainties in i, o, l, l’, calculate the uncertainties in both the theoretical and experimental values for m. Do the ranges of values determined by these two calculations overlap? VI-4: Compare the measured and stated focal lengths of the concave mirror from step V4 by
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Unformatted text preview: calculating the percent error of your measured value. VI-5: Tabulate the data from step V5. Plot the ratio I/I vs. φ . Malus’s law predicts that : 2 cos I I φ = . On the same figure plot 2 cos vs. . Do your measurements follow Malus’s law? VII-Questions VII-1: Using the information of section V2(a), calculate the total uncertainty, σ n in the measurement of the refractive index of the glass plate. VII-2: Assume that you have a mixture of unpolarized and polarized light propagating in the same direction with percentages P u for the intensity of the unpolarized and P p for the intensity of the polarized light. P u + P p = 100 Describe a method of determining P u and P p using a single polaroid sheet and a photometer. VII-3: The images formed by lenses appear colored while this is not true in the case of mirrors of any curvature. Explain why this is so....
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