Answered: What is the wavelength of the light…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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In the lab, you want to use a spectrometer to study the emission spectrum of a gas. This device works by having the light go through a diffraction grating and then carefully measuring the angle at which the light exits the grating. The problem is that the grating that you have is not labeled, so you do not know the spacing. To calibrate the spectrometer, you send a HeNe laser (wavelength 632.8nm) through the grating and observe it to exit at an angle of 37.6° in the second order by this grating. (For obscure technical reasons, the first order is not observable.) Light from the gas is then measured to be deflected by 34.9° in the second order. What is the wavelength of the light that is to be measured?

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