Brook Q, LON-CAPA (9) Bright Fri LON-CAPA Course Cont X --> Secure i https://spo

Question

Brook Q, LON-CAPA (9) Bright Fri LON-CAPA Course Cont X --> Secure i https://spock.physastuga.edu/res/msu/plough : Apps Ny Apartments : Vacation ] School O My MOST DEFINED. a 1 Other bookmarks Messages Courses Help Logout Daniel C. Foster v (Student section: 25770) PHYS 1252: Studio Physics II for Engineers (Optics/EM), Pond, Fall 2017 Contents Course Set #4 Notes ble slit experiment, 431 nm light gives a third-order bright fringe at a certain location on a flat screen. What is the vngeka wthelength mould reduce a dark fringe at the same location? Assume that the range of visible In wavelengths extends from 380 to 750 nm. 889 onm Both fringes will have the same interference angle. Send

Explanation / Answer

Location of 3rd bright fringe=3*wavelength*D/d

For maximum wavelength second order dark fringe should be there

3*431*D/d=2.5*wavelength*D/d

We got wavelength=517.2 nm

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