首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
如图所示,是蜡烛通过凸透镜在光屏上的成像情况,以下器材利用这一成像原理的是( )
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
在探究凸透镜成像规律的实验中已知凸透镜的焦距为10cm如图所示小刚同学计划将蜡烛有远到近逐渐向透镜移
在用光具座研究凸透镜成像规律的实验中1测量凸透镜的焦距如图所示则该凸透镜的焦距为cm2将蜡烛凸透镜光
小明利用如图所示的装置来探究凸透镜成像的规律通过实验他发现蜡烛离凸透镜越远光屏上得到的像越填大或小再
在探究凸透镜成像规律的实验中1保持蜡烛凸透镜的位置不变调节光屏的位置使光屏上得到了清晰的像如图所示此
在使用如图所示的实验器材探究凸透镜成像规律时小梦将蜡烛放在二倍焦距以外能在光屏上成一个倒立缩小的像固
小明用焦距为10cm的凸透镜蜡烛光屏等器材探究凸透镜成像的规律1如图所示把蜡烛凸透镜光屏依次放在光具
在用焦距为10cm的凸透镜来探究凸透镜成像规律的实验中小刚将蜡烛凸透镜光屏依次放在光具座上如图所示1
在用焦距为10cm的凸透镜来探究凸透镜成像规律的实验中小刚将蜡烛凸透镜光屏依次放在光具座上如图所示.
小明在探究凸透镜成像规律时蜡烛与光屏分置于凸透镜两侧保持凸透镜的位置不变先后把蜡烛放在如图所示的ab
小明利用如图所示的装置来探究凸透镜成像的规律通过实验他发现蜡烛离凸透镜越远光屏上得到的像越填大或小再
在探究凸透镜成像的实验中1利用如图装置进行以下操作将实验器材按蜡烛凸透镜和光屏的顺序放置在光具座上调
如图8所示研究凸透镜成像的实验示意图MN为凸透镜的主光轴F.为凸透镜的焦点1在实验时应用的实验器材有
在探究凸透镜成像规律的实验中当凸透镜光屏和蜡烛的位置如图所示时光屏上能成清晰的像那么
把蜡烛和光屏的位置互换,光屏上不会成清晰的像
利用成像特点可制成照相机
把蜡烛向左移动,调整光屏的位置,得到的像变大
所成的像是倒立、放大的实像
小玉同学研究凸透镜成像规律发现蜡烛凸透镜和光屏如图所示放置时蜡烛通过凸透镜在光屏上形成一个清晰的像这
在用焦距10cm的凸透镜来探究凸透镜成像规律的实验中小刚将蜡烛凸透镜光屏依次放在光具座上如图所示1当
在探究凸透镜成像的实验中凸透镜的焦距为10cm1利用如图装置进行以下操作将实验器材按蜡烛凸透镜和光屏
在用凸透镜来探究凸透镜成像规律的实验中小刚将蜡烛凸透镜光屏依次放在光具座上如图所示1当将点燃的蜡烛从
如图所示是蜡烛通过凸透镜在光屏上的成像情况以下器材利用这一成像原理的是
放大镜
电影放映机
照相机
投影仪
在用光具座研究凸透镜成像规律的实验中1测量凸透镜的焦距如图所示则该凸透镜的焦距为_________c
如图所示是探究凸透镜成像规律的实验装置凸透镜的焦距为10cm1实验时通过调节使烛焰凸透镜光屏三者的中
热门试题
更多
TomandCindyinthesameclass.
Whatisyname?
HettyisherEnglish名字.
Pleasetellmetheanswerthequestion. A.of B.to C.in D.'s
Thisagreentree.
Sheisagirl.HnameisAlice.
nameisBob.What'sname?A.I;you B.My;your C.I;your D.My;you
Bobhasatoycar.itcolorisblack.
nameis
8分Thesecrettolivinglongercouldbeassimpleaspickingupyourwalkingpaceaccordingtoanewstudy.ResearchersfromtheUniversityofSydneyfoundthatwalkingatabrisk快的orfastpacewasassociatedwithariskreductionof24percentforanycauseofdeath. Thiseffectwasevenmoreobviousinolderagegroupwithfastwalkersovertheageof60reducingtheirriskofdeathbyasurprising53percent.ProfessorEmmanuelStamatakiswholedthestudyexplainedAfastpaceisgenerallyfivetosixkilometersperhourbutitreallydependsonawalker'sfitnesslevelsanalternativesindicatoristowalkatapacethatmakesyouslightlyoutofbreathorsweaty. Inthestudytheresearcherslookedattheresultsof11surveysfrom1994to2008inwhichparticipantsrecordedtheirwalkingpaceaswellasagesexandBMI.Theanalysisshowedthatwalkingatanaveragepacewasassociatedwitha20percentriskreductionforall﹣causemortality死亡率comparedwithwalkingataslowpacewhilewalkingatabriskorfastpacewasassociatedwithariskreductionof24percent. Theresearchershopethefindingswillencouragethedevelopmentofpublichealthmessageaboutthebenefitsofwalkingpace.ProfessorStamatakisaddedTheseanalysessuggestthatincreasingwalkingpacemaybeastraightforwardwayforpeopletoimprovehearthealthandriskforprematuremortality﹣﹣﹣providingasimplemessageforpublichealthcampaignstopromote. Especiallyinsituationswhenwalkingmoreisn'tpossibleduetotimepressuresoralesswalking﹣friendlyenvironmentwalkingfastermaybeagoodoptiontogettheheartrateup﹣﹣﹣onethatmostpeoplecaneasilyaddtotheirlives. 1Whobenefitmostfromwalkingfast? A.Cancersufferers. B.Theelderly. C.Thosewhohaveheartproblems. D.ThosewhohavehighBMI. 2WhatdecideshowfastapersoncanwalkaccordingtoProfessorStamatakis? A.His/Herfitnesslevels. B.His/Herages. C.His/Herwill. D.His/HerBMI. 3Whycanwalkingfastreducedeathrate? A.Mostpeoplelikedoingit. B.Itbenefitstheheart. C.Itreducescancermortality. D.Mostpeoplecandoiteasily. 4Whatisthemainideaofthetext? A.Walkingiseasyexerciseforpeopletodo. B.Walkinghasreceivedlittleattentionuntilnow. C.Moreandmorepeoplearewalkingfastforhealth. D.Afastwalkingpacecanbenefitpeople'shealth.
Thisisbook. A.I B.you C.me D.my
他的fatherisadoctor.
25分假定你是李华一名高一学生.你得知晋江市正向全国在校中学生招募2020年晋江世界中__会形象大使参与接待来访参赛国的学生.你写信申请内容包括 1.希望成为形象大使 2.介绍自己的优势性格英语程度领导沟通能力等 3.对形象大使的认识. 注意1.词数100左右 2.可以增加适当细节使行文连贯 3.信中不得出现除晋江以外的地名和校名. 参考词汇世界中__会Gymnasiade形象大使GoodwillAmbassador DearSir/Madame I'mLiHua. Yoursincerely LiHua
Whocan回答myquestion?Pleasehandsup.
10分Makingdecisionswhenshoppingisoftenatoughcall.Evenifyou'resatisfiedwiththefirstdressyoutryonwouldyougoonlookingforalternativescomparingstylesandpricesuntilliterallydroppeddead? Psychologyresearchershavestudiedhowpeoplemakedecisionsandconcludedtherearetwobasicstyles.Maximizersliketotaketheirtimeandweighawiderangeofoptionssometimeseverypossibleone﹣beforechoosing.Satisficerswouldratherbefastthanthorough. 1Soeveniftheyseewhatwouldseemtomeettheirrequirementstheycan'tmakeadecisionuntilafterthey'veexaminedeveryoptiontomakesurethatthey'remakingthebestpossiblechoice.Researchersfollowed548job﹣seekingcollegeseniorsatelevenschoolsfromOctoberthroughtheirgraduationinJune.Theyfoundthatthemaximizerslandedbetterjobs.2. Themaximizeriskickinghimselfbecausehecan'texamineeveryoptionandatsomepointhadtojustpicksomethingtheysay.Maximizersmakegooddecisionsandendupfeelingbadaboutthem.3. Satisficersalsohavehighstandardsbuttheyarehappierthanmaximizers.Maximizerstendtobemoredepressedandtoreportalowersatisfactionwithlifetheirresearchfound. Facedwithsomanychoicesinourlivesweneedtolearnhownottowastetimeandenergyonourdecision.making.4Forinstanceifyou'repickingarestaurantforalunchmeetingfirstdecidingonacertainpartoftownortypeofcuisinecannarrowyouroptions. Thenonceyou'vearrivedatadecisionstickwithit.5Tolimitthenumberofoptionsyoucansetatimelimitfordecision﹣making.Sayyouarebuyinganewbagyoucouldspendanamountoftimestudyingfeaturespriceandvalue﹣butifyougaveyourselfonlyfiveminutestomakeadecisionandthereareonlythesebagsyoucanconsideryou'llsavetime.You'llbehappierwithyourdecisiontoo. A.Maximizersarepeoplewhowantthebest. B.Firstofalldecreaseyourrangeofoptions. C.Justacceptthatnodecisionisevercompletelyperfect. D.Comparingisoftenamustwhenyoumakeadecision. E.Satisficersmakegooddecisionsandendupfeelinggood. F.Theotheristomakedecisionsmoreaccuratelyatthebeginning. G.Theirstartingsalarieswere20percenthigherbuttheyfeltworseabouttheirjobs!
15分Peoplewithhighself﹣confidence1naturalhaveoptimisticandJoyfulemtionsaswellastheknowledgethattheycanchangetheiremotionsfromnegativetopositive. Emotions2beanormalpartoflife.Theyindicatehowyoufelaboutasituationandanyneededaction.Whenyouhavehighself﹣respectandself﹣cofidenceyoufeelgod3life.Youfeelsecureandhaveallopenhearandcalmmind. The4highyourlevelofemotionalhealthisthemoresel﹣worthyouhave.Evenwhenthingsgowrongyou'recomposedandready5dealwiththesituationinaconstructiveway. Evenwhenyoufocuson6carrypositiveattitudeatalltimesweallknowthatlifecanbefullofannoyances﹣yourdog7runawaysomeonesideswipesyourcaryourplaneislateyouhavetoworkovertimetogetaprojectdone.Allofthesecancauseabadmoodandthrowyouremotionsintoadownwardspiral. Havingemotionalhealthisn'tdifficultbut8doestakefocusandconcentration.Beawareof9yourfeelingisanddirectyouremotionsintosomethingmoreoptimistic.Yourself﹣confidencewill10strengthatthesametime.
thatis
Alicehasa好的bag.
如图有一块三角形的土地它的一条边BC=100米BC边上的高AH=80米.某单位要沿着边BC修一座底面是矩形DEFG的大楼DG分别在边ABAC上.若大楼的宽是40米即DE=40米求这个矩形的面积.
“Whereishebook?”“It'sonthedesk.”
看!那是一只风筝. !akite.
某商场以每件10元的价格购进一种商品试销中发现这种商品每天的销售量m件与每件的销售价x元满足一次函数其函数图象如图所示. 1求商场每天销售这种商品的销售利润y元与每件的销售价x元之间的函数解析式 2试判断每件商品的销售价格在什么范围内每天的销售利润随着价格的提高而增加.
6分JustasJohnLubbocksaidwemaysitinalibraryandyetbeinallquartersoftheearth.Herearesomeofthecoolestlibrariesoftheworld. StuttgartCityLibrary Despiteaclassicwhite﹣on﹣whitecolorStuttgartCityLibraryisoneofthemostvisuallyappealingmodernlibraries.TheamazingmodernandsimplelookistheproductoftheKoreanarchitectYiEun﹣young.TheGermanlibraryopenedin2011andcostnearly80millioneurostoconstruct. KanazawaUmimiraiLibrary ArchitectsfromtheCoelacanthK&HArchitectsstudiodesignedtheKanazawaUmimiraiLibrarytocreatethebestreadingenvironment.Heatedfloorsanoutpouringofnaturallightandotherfeatureswerespecificallyincludedtoachievethisgoal.Thewallwhichconsistsofthousandsoftinyopeningsallowsnaturallightingintothebuildingimprovingtheoverallfeelofthespace.ThisJapaneselibrarywasopenedin2011andreflectstheappearanceofmanymodernandsimplespaces. LibraryofCongress In1800CongresssetuptheLibraryofCongressinWashingtonD.C..FifteenyearslaterThomasJeffersonofferedhispersonallibrarytoreplacebooksthatwerelostwhentheBritishsetthebuildingonfirein1814.Hisbookswhichtooknearly50yearstocollectvariedfromtextsonscienceliteratureandphilosophytobooksinavarietyofforeignlanguages.ThesedaystheLibraryofCongressoffersmorethan155millionitemsandthelargestrarebookcollectioninNorthAmerica. StateLibraryofVictoria TheStateLibraryofVictorialocatedinMelbourneAustraliaisoneofthelargestexhibitinglibrariesintheworld.Thoughitopenedin1856majorrepairstookplacebetween1990and2004.TheLaTrobeReadingRoomisoneofthelibrary′smainattractionsduetoitsvisuallyamazingarchitecture.Thelawnatthelibrary'sfrontattractshundredsofcityfolkeachdaywhogatherforlunchortoenjoythestatuesthere.Thelibrarycurrentlycontainsovertwomillionbooksaswellasarmor盔甲ofNedKellyafolkheroagainsttherulingclass. 1Whichlibraryhasthelongesthistory? A.StuttgartCityLibrary B.KanazawaUmimiraiLibrary C.LibraryofCongress D.StateLibraryofVictoria 2What'sspecialaboutStateLibraryofVictoria? A.Ithasgreatarchitecture. B.Ithasafolkhero'sstatueinit. C.Itistheworld'slargestexhibitinglibrary. D.Itservesasameetingplaceforthecitizens. 3Whatdoesthefirsttwolibrarieshaveincommon? A.Theycostalargeamountofmoney. B.Theyareconstructedinthemodernstyle. C.TheyaredesignedbyKoreanarchitects. D.Theyfeatureprovidingreaderswithnaturallight.
Whatis youname?
Hermotheratthisgirlangrily生气地. A.looks B.sees C.watches D.asks
—hasawalkman随身听.coloriswhite. A.Her;Its B.Her;It C.She;Its D.She;It
HerChinesenameLinNa.
她的skirtisverynice.
8分Feathersarenotjustforflight.Theykeepbirdswarmandattractmates.AndforoneAustralianbirdfeathersevenhelpproduceanimportantsound﹣﹣analarm. Peoplehadlongnoticedthesebirdsproducedtheseloudsounds.TrevorMurrayaresearcherattheAustralianNationalUniversitysaid.MysupervisorRobMagrathandMayHingeethoughttheywereusedasanalarm.Sotheydidsomeplaybacksandtheycouldshowquitestronglythatifyouplaybackthesesoundstootherbirdstheyfleestraightaway.SoIwasreallyinterestedinhowtheyproducethesoundwhetheritisactuallyasignalandwhetherit'sareliablesignal. Theteamfocusedtheirexperimentonspecificfeathersinthepigeon'swing.Wewereabletotargettheeighthprimaryfeatherwhichisunusuallynarrow.Andthenwealsoremovedondifferentsetsofbirdsthoseneighboringfeatherstheninthprimaryfeatherandtheseventhprimaryfeather.Andwewereabletoseewhentheeighthprimaryfeatherwasmissingthehighnotehadcompletelydisappeared.Sotheeighthprimaryfeatherproducedthathighnoteandtheninthprimaryfeatheractuallyproducedthelownote. Andifthebirdsarefleeingfromdangertheyproducealouderandhighersoundthantheydoduringanormaltakeoff.ThestudyisinthejournalCurrentBiology. Murrayandhiscolleaguesdidanotherexperimentwheretheyusedtherecordingstheymadetoobservethereactionsofotherpigeons.Wewereabletoseetheunusualeighthprimaryfeatherwasimportantforsignalingalarm.Whenthateighthprimaryfeatherwasmissingtheyveryrarelyresponded.Theyalmostneverfled.Whereaswhenthatninthprimaryproducesthesoundtheyfledjustasmuchastonormalalarms.Thisshowsusthisunusualprimaryfeatherisimportantforsignalingalarm. Thatmakesbirdsofafeatherfleetogether. 1WhatdoestheunderlinedwordtheyinParagraph2referto? A.Thebirds. B.Thefeathers. C.RobandMay. D.Theloudsounds. 2WhatdidRobMagrathandMayHingeefindoutaboutthebirds? A.Theyflyawayasagroup. B.Theysendalarmswithfeathers. C.Theyproducedifferentnotes. D.Theyattractmateswithfeathers. 3Whydidtheteamremovedifferentfeathers? A.Torecordthenotestheyproduce. B.Tokeepthepigeonsstayincages. C.Tocomparetheirwidthandlength. D.Toobserveotherpigeons'reactions. 4AccordingtoMurrayandhiscolleagueswhydoestheunusualfeathermattermost? A.Itkeepsthepigeonswarm. B.Itrespondstoalarms. C.Ithelpsbirdsflymorequickly. D.Itsoundsalarmsofdanger.
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库