Physics 112 Final Exam Review - Mult Ch. 1. Which is a scalar ...

45.Thecriticalangleforamonochromaticlightraytravelingfromadispersivematerialintoairis45. Whatistheindexofrefractionforthematerial? Page646.Refractionofawaveiscausedbyachangeinthewave's a)2.41 b)1.71 c)1.41 d)0.70747.Inthediagram,arayoflightentersatransparentmediumfromair.IfangleXis45andangleYis a)amplitude 30,whatistheabsoluteindexofrefractionofthemedium? b)frequency c)speed d)phasea)0.667 b)0.707 c)1.41 d)1.5048.ThediagramshowsarayoflightpassingfrommediumXintoair.Whatistheabsoluteindexof refractionofmediumX? a)0.50 b)2.0 c)1.7 d)0.5849.ArayoflightinairisincidentonablockofLuciteatanangleof60fromthenormal.Theangleof refractionofthisrayintheLuciteisclosestto50.Ifthecriticalangleforasubstanceis44,theindexofrefractionofthesubstancesisequalto a)35 b)45 c)60 d)75a)1.0 b)0.69 c)1.4 d)0.023

Page7 51.Thediagramshowsarayofmonochromaticlightincidentonanalcohol-intglassinterface. Whatoccursasthelighttravelsfromalcoholintointglass?c)Thespeedofthelightincreasesandtheraybendstowardthenormal. b)Thespeedofthelightdecreasesandtheraybendsawayfromthenormal. a)Thespeedofthelightdecreasesandtheraybendstowardthenormal.52.Arayofmonochromaticlightistravelinginintglass.Theraystrikestheintglass-airinterfaceat anangleofincidencegreaterthanthecriticalanglefortheintglass.Whichdiagrambestrepresents d)Thespeedofthelightincreasesandtheraybendsawayfromthenormal.a) thepathofthislightray? b) c) d)53.Howdoesthespeedofamechanicalwavechangeinauniformropeifyouincreasethefrequency?54.Asthetensioninaspringincreases,thespeed a)Speedincreases c)Speedremainsthesame b)Speeddecreases d)Speeddependsonamplitudea)increases b)decreases c)remainsthesame .55.Anobserverhearsafrequecy3:75105Hz.Thesourcefrequencyis5:97104Hz.Whichoneofthe followingbestdescribesthesituation? d)acceleratesc)Theseparationbetweenthesourceandtheobserverisdecreasing. b)Theseparationbetweenthesourceandtheobserverisincreasing. a)Thesourceismovingfasterthanthespeedofsound.d)Theobserverisstationary.

56.Aghterplaneistravellingat23thespeedofsoundandapproachesastationaryobserver.Whatis theratiooffotofs? Page857.Whatfractionofthespeedofsoundmustanobjectbetravellingifastationaryobserverdetectsa frequency4.5timeshigherthanthesourcefrequency? a)31 b)23 c)32 d)1358.Anechoisheard3.5slater.Whatisthedistancetothecliistheairtemperatureis0:0C? a)97 b)57 c)75 d)7959.Asonicboomisheardwhen a)579m b)1159m.c)290m d)680mb)twoobjectsapproacheachotherveryquickly. c)anobjecttravelsslowerthanthelocalspeedofsound. a)anobjectmakesaloudsound.60.Whatelectromagneticwavecarrieswithitthemostenergy? d)anobjecttravelsfasterthanthelocalspeedofsound.61.Whichoneofthefollowingwaveshasthelongestwavelength? a)X-rays. b)Radio. c)Yellowlight. d)Microwaves.62.LightistravelingfromwatertoPlexiglas,whatisthelargestpossibleangleofrefraction? a)61.7 a)Gammarays b)Radiowavesb)28.3 c)Infraredwaves. d)Ultravioletwaves.63.Inzircon,greenlighthasawavelengthof273nmandindexofrefractionof1.92.Whatisthe c)90.0 wavlengthofgreenlightinair? d)totalinternalreectionoccurs64.Howmanytimesfasterdoeslighttravelinfusedquartzthanindiamond? a)364nm b)273nm c)142nm d)524nm65.Inwhichoneofthefollowingdoeslighttravelthefastest? a)0.603 b)1.66 c)2.42 d)0.960a)Glycerin b)Zircon c)Plexiglas d)Ruby