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33% Fri 11:39 AM Q Chrome Ed View History Bookmarks People Window Help File Mastering Physics: Ch 24 HW Rawan D 1 1. A https:// session masteringphysics.com /myct/itemView ?offset next&assignment; ProblemID 61695349 C fi https: College Physics ll PHYS245 Spring 2016 Vemuru Signed in as rawan aljohani Help l Close My Courses Course ID: MF Ch 24 HW Problem 24.38 Resources Applications, 7e Course Home Assig previous l 13 of 22 l next Announcements Problem 24.38 Part A rough groups of You instructor hasn't White light containing wavelengths from 4 nm to p 750 nm falls on a grating with 7500 How wide is the first-order spectrum on a screen 3.30 m away? standing Express your answer to three significant figures and include the appropriate units powered by amplifire Get the Mobile App Course Calendar Value Units Ay Sunday posted by you Subm My Answers Give Up Continue Provide Feedback de 24 Ch 26 HW a Equations docx Show All X hot 2016041 png Radioactivity (1).xls

Explanation / Answer

sin theta = lambda/d = (410x10^-9)/(0.01/7500) = 0.3075

theta = 17.908 degrees

theta1 for lambda = 750 nm = sin^-1[(0.3075x750)/410] = 34.23 degrees

Width of spectrum would be 3.3[tan 34.23 - tan 17.908] = 1.179 m

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