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University of Wisconsin - Milwaukee

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Problem 54 Medium Difficulty

Mirror $\mathrm{M}_{1}$ in Figure 25.16 is displaced a distance $\Delta L .$ During this displacement, 250 fringe shifts are counted. The light being used has a wavelength of 632.8 $\mathrm{nm}$ . Calculate the displacement $\Delta L .$

Answer

39.6 \mu m

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Marshall S.

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Video Transcript

So we have a set up as shown into figure 25.16 in the text, the mirror is moved by a distance Delta l and the total friendship of and equals 250 is observed. So the Web link of the light is also given, which is 632 nanometer. No to find the total distance moved by the mirror. Remember the fact Lambda before Distance moved by the mirror is going to be called one friendship just like the problems we did before. So from there, actually, we can just write down Delta. L is going to be called to end times Lambda before, and that is going to be 2 50 times 6 32.8 times 10 to the negative nine over for. And this is going to give me 3.96 times 10 to the negative five meters, which is 39.6 micrometer.

University of Wisconsin - Milwaukee
Top Physics 103 Educators
Marshall S.

University of Washington

Farnaz M.

Other Schools

Aspen F.

University of Sheffield

Jared E.

University of Winnipeg