8/14/2019 Homework%20for%20Chapter%202%20from%20textbook

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HomeworkforChapter2fromtextbook

Chapter2 RefractingLight

1. Whatismeantbyrefraction?Canyoushowonadiagramhowitworks?2. Pleasenotecarefullythediagramonpage25,figure2.4.youmustunderstandthevariouslabelssuchasrefractedray,

incidentray,angleofincidence,angleofrefraction,normal

3. Gothroughthesamplesproblemsonpage26andseeifyoucanfollowthelogicofthesolution.4. Whatisthephysicalmeaningoftherefractiveindex?Whatisitactuallymeasuring?5. Explaininthesimplesttermsthemeaningofcriticalangleandtotalinternalreflection.(Itmighthelptorefertothe

diagramsonpage29,figure2.8)

6. Howcanmiragesbeexplained?7. Whatpracticalusecanopticalfibresbeusedfor?8. Therayparticlemodelhasafewlimitations,canyoulistthem?

9. Whatisthedifferencebetweenaconvexandaconcavelens?10. Lookatthefigure2.26onpage36.Noticecarefullyhowweuseraydiagramstofindtheimageformedbyaconvexlens.

Thisisverysimilartothewayweusedraydiagramstofindtheimageformedbyaconcavemirror.Whatisthedifference

however?

11. Whataresomeofthecommonproblemsassociatedwitheyes?12. Makesureyoudothehomeworksheetforthissection.

ProblemstodofromChapter2

Questions:1234567810111314 15202627

Youshouldbeabletounderstandattheendofthischapterthefollowingconcepts

1. Bendingoflight2. HowtouseSnellsequationtoworkouttheangleofrefraction3. Beabletodrawthediagramforvariousquestions4. Totalinternalreflectionandcriticalangle,whyitoccurs5. Beabletofindthecriticalanglegiventheindexofrefractionforaparticularmedium6. Beabletouselightraystofindtheimageformedbyconvexlensinparticular7. Formingimageswithlenses8. Beabletousethemirror/lensformulatoworkoutthepositionoftheimageanditsdescription9. Microscopes:Anapplicationoflenses10. Humanandanimalvision haveabasicunderstanding

Pleaseupdateyourformulasheettoincludetheseconcepts,sincethemidyearexamyouwillbeabletobringintotheexamonly

oneA4sheetofpaperannotatedonbothsides