首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
某实验小组用一凸透镜做“探究凸透镜成像规律”的实验,进行了以下实验步骤: (1)将凸透镜正对太阳,在另一侧移动光屏,距凸透镜10cm处,光屏接收到一个最小、最亮的光斑,由此可知,该凸透镜的焦距为...
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
小王用凸透镜蜡烛光屏和光具座等器材探究凸透镜成像的规律实验桌上现有A.B.两个凸透镜其中凸透镜A.的
材料一义务教育物理课程标准2011年版中关于凸透镜的内容要求是认识凸透镜的会聚作用和凹透镜的发散作用
在探究凸透镜成像的规律实验中1将蜡烛凸透镜和光屏组装在光具座上调整凸透镜和光屏所在的两个平面都与光具
在探究凸透镜成像的规律的实验中物体距离凸透镜30cm时在凸透镜另一侧的光屏上可得到一个倒立的放大的实
5cm
10cm
15cm
18cm
小云利用焦距为10cm的凸透镜进行了探究凸透镜成像的规律的实验当光屏上出现烛焰清晰的像时测得光屏到透
小强利用家里的放大镜焦距已知蜡烛火柴光屏白纸板做探究凸透镜成像规律的实验.1还需要添加的实验器材是2
材料一义务教育物理课程标准2011年版中关于凸透镜的内容要求是认识凸透镜的会聚作用和凹透镜的发散作用
在探究凸透镜成像的规律实验中1将蜡烛凸透镜和光屏依次摆放在______________2点燃蜡烛调整
在探究凸透镜成像的规律的实验中物体距离凸透镜30cm时在凸透镜另一侧的光屏上可得到一个倒立的放大的实
5cm
10cm
15cm
18cm
某同学在做探究凸透镜成像规律实验中当光屏距离凸透镜为15cm时得到缩小的像当光屏距离凸透镜25cm时
如图是某实验小组的同学探究凸透镜成像的实验示意图PQ为凸透镜的主光轴F为凸透镜的焦点将点燃的蜡烛放在
用研究凸透镜成像规律的实验装置比较甲乙两个凸透镜的焦距大小.两次实验时烛焰与凸透镜的距离均为10cm
甲凸透镜的焦距小于乙凸透镜的焦距
甲凸透镜的焦距大于乙凸透镜的焦距
甲凸透镜的焦距等于乙凸透镜的焦距
无法比较两个凸透镜的焦距大小
如图14所示小明用蜡烛凸透镜和光屏做探究凸透镜成像规律的实验⑴凸透镜的焦距是10㎝当烛焰在图示位置时
如图所示甲乙分别是探究平面镜成像特点和探究凸透镜成像规律的实验装置.1在探究平面镜成像特点的实验中为
小云利用焦距为10cm的凸透镜进行了探究凸透镜成像的规律的实验当光屏上出现烛焰清晰的像时测得光屏到透
在探究凸透镜成像规律的实验中小刚同学用焦距分别为5cm10cm15cm的凸透镜做实验实验装置如图21
小宇为了探究课堂上学到的透镜知识用一个凸透镜和一张纸做实验他把凸透镜放在太阳光底下然后调整纸与凸透镜
如图16所示甲乙分别是探究平面镜成像特点和凸透镜成俾规律的实验装置1如图甲所示小强在探究平面镜成像特
在验证凸透镜成像规律的实验中小明设计的实验报告部分如下请填写空格处的内容实验目的验证凸透镜成像规律实
在探究凸透镜成像的规律实验中1将蜡烛凸透镜和光屏组装在光具座上调整凸透镜和光屏所在的两个平面都与光具
热门试题
更多
10分Thetraditionofbirthdaypartiesstartedalongtimeago.Therearesometraditionsthatyoucanfindalmostanywhereanytimesuchassendingbirthdaycardsblowingoutthecandlesonabirthdaycakeandsingingthe‘HappyBirthday'song.Othersareonlyfoundforcertainagesandincertaincountries. InChinaonachild'ssecondbirthdayfamilymembersputmanythingsontheflooraroundthechild.AccordingtoChinesetraditionthefirstthingthatthechildpicksuptellsyouwhatthechildwilldolaterinlife. ForJapanesechildrenthethirdfifthandseventhbirthdaysareespeciallyimportant.AtthisagethereisaspecialcelebrationShichi﹣Go﹣SansevenfivethreeinJapanesewhenchildrengotothetemplewearinganewkimono和服.Thepriest僧侣givesthemspecialsweetsandtheparentsusuallyorganizeapartyfortheirfriendsintheirhome. InArgentinaMexicoandseveralotherLatinAmericancountriesgirlshaveaspecialbirthdaycelebrationwhentheyreachtheageoffifteen.Afteraspecialceremony仪式thegirlsdanceawaltzwiththeirfatherandotherboys. Eighteenisthetraditional‘comingofage'﹣theagewheninmanycountriesyouhavetherighttovotejointhearmyandinBritaindrinkalcoholorbuyahouse. InmanyEnglish﹣speakingcountriesatwenty﹣firstbirthdaycakeoftenhasakeyontoporthecakeitselfissometimesintheshapeofakey.Thekeymeansthattheyoungpersonhasgrownupandheorsheisfreetoleaveandenterthefamilyhomeatanytimetheywantto! 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
泉港锦绣公园湖水清澈见底平静如镜.站在湖边的游客能清晰地看见自己在水中的倒影这是光的现象游客也能欣赏到水中的鱼在游玩他们看到的是鱼的选填“虚”或“实”像.
1分﹣﹣﹣HaveyoueverheardofCaoWenxuanawriterfromJiangsu. Ofcourse.heisagoodfriendofmyfather's. A.Imean B.Thatistosay C.Aboveall D.Believeitornot
阻值为50Ω的定值电阻R接在电源两端通过电阻R的电流为0.2A10s内电阻R产生的热量是J其两端电压是V.
对两个不相等的实数根ab我们规定符号max{ab}表示ab中较大的数如max{24}=4按照这个规定方程max{x﹣x}=的解为.
如图已知ADBE分别是△ABC中线和高且AB=AC∠EBC=20°则∠BAD的度数为
8分 1.Howlongdoestheshowlastfor A.10days. B.11days. C.12days. D.13days. 2.OnFridayyoucanwatchtheshowat. A.900a.m. B.400p.m. C.730p.m. D.830p.m. 3.Howmuchdoesafamilyoffourprobablyspendonthetickets A.220yuanforSectionCticketsforthe900a.m.show. B.220yuanforSectionCticketsonweekends. C.Around700yuanforSectionAticketsonMonday. D.Around300yuanforSectionBticketsforthenightshow. 4.Whowillnotbeallowedinthetheater A.A3﹣year﹣old. B.A6﹣year﹣old. C.A20﹣year﹣old. D.A50﹣year﹣old.
1分﹣Jerrydon'ttoolateoryou'llfeelsleepyinclasstomorrow. ﹣OKMum. A.getup B.pickup C.stayup D.wakeup
1分YangJiangpublishedabookofherfamily'slifeWeThreeinherninety
电能表是测量的仪表.小林家4月底电能表读数为2708.7kW•h5月底电能表读数如图所示那么5月份他家消耗了kW•h的电能.若电价为0.53元/kW•h则需电费元.1kW•h的电能可供标有“220V40W”的灯泡正常工作h.
目前青少年近视现象十分严重如图所示表示近视眼成像示意图的是选填“甲”或“乙”应配戴选填“凸”或“凹”透镜制成的眼镜矫正.
1分Notonlytheplayersbutalsothecoachbeplayingfootballnow.
如图把一块直角三角板的直角顶点放在直尺的一边上如果∠1=32°那么∠2=
1分Youcan'timaginewhatdifficultyIhadexpressmyselfclearlyatthebeginning.
仔细观察下列数字排列规律则a=
2017年8月29日昆明地铁3号线正式通车运营.列车车轮上新增了车轮降噪环有效降低过弯道时轮轨摩擦发出的声响这是在填“声源处”“传播途中”或“人耳处”减弱噪声.每到一站时车厢内喇叭会提醒乘客下车提醒的声音是由物体的产生的.
如图所示容器中装有一定质量的水先后按甲乙两种方式使物体A和小玻璃杯漂浮在水面上图中细线重力及体积均不计.设甲乙两图中物体A和小玻璃杯共同受到的浮力分别为F甲和F乙水对容器底的压强分别为p甲和p乙则
1分﹣﹣﹣DavidIhearthatPeterhaswonanotherchampionship. ﹣﹣﹣It'snotsurprising..Hepractiseshardestintheteam. A.Everydoghasitsday. B.Nopainnogain. C.Manyhandsmakelightwork. D.Actionsspeaklouderthanwords.
1分ThereisnoticketleftforLangLang'spianoconcert.youyoursistercangotoit. A.Neithernor B.Notonlybutalso C.Bothand D.Eitheror
下列计算结果正确的是
1分﹣﹣﹣Whenwilltherailwayinourcityinlengthofabout208kilometersbeinservice ﹣﹣﹣2020.Twofifthsbeencompletedsmoothlysofar. A.Untilhas B.Untilhave C.Notuntilhas D.Notuntilhave
一束光从空气中斜射到水面时发生反射和折射OB是反射光线请作出入射光线和大致的折射光线.
20分我们徐州正在推广公共自行车提倡人们绿色出行低碳生活.现在某网站就此话题征文请你参考下面的要点提示用英语写一篇短文投稿谈谈推广公共自行车的好处. 内容要点 要求1短文内容须包含所有提示信息可适当发挥……部分请自拟内容作答 2词数100左右.开头部分已给出不计入总词数 3表达中请勿提及真实校名及本人姓名. 提示低碳生活low﹣carbonlife NowpublicbikesareprovidedforpeopleinXuzhou.Ithinkit'sagoodthing.
有款静电式空气净化器空气进人净化器静电箱内被电离使PM2.5颗粒带电然后被静电箱的带电极板吸附这是利用了异种电荷来实现对室内空气净化的.
1分﹣﹣﹣Whatareyoudoing﹣﹣﹣I'mreadingthebookyoulentmelastweek. A.what B.who C.when D.that
1分﹣Whataboutyesterday'sdragondance﹣Ohit'soneI'veeverseen. A.amostwonderful B.morewonderful C.themostwonderful D.amorewonderful
如图反比例函数y=k≠0的图象经过AB两点过点A作AC⊥x轴垂足为C过点B作BD⊥x轴垂足为D连接AO连接BO交AC于点E若OC=CD四边形BDCE的面积为2则k的值为
函数y=中自变量x的取值范围是.
8分Whenyoucoughorsneezeyou'dbetterturnyourheadawayfromothersandcoveryourmouthwiththefullpartofyourhand.AndthenyoushouldsayExcuseme. Thisseemssosimplebutitissurprisinghowmanykidshaveneverbeentoldtodothis.ActuallyInoticeadultsallthetimewhocoughandsneezeinpublicwithoutplacingahandoverthemouth.OneimportantthingIpointouttothekidsisthataftertheysneezeorcoughontheirhandstheyshouldwashtheirhandsassoonaspossible.Ifnottheywillbepassingthosegerms细菌alongtoeverythingandeveryonetheytouch. Ifyoucometoadoorandsomeoneisfollowingyouholdthedoor.Ifthedooropensbypullingpullitopenstandtothesideandallowtheotherpersontopassthroughfirstthenyoucanwalkthrough.Ifthedooropensbypushingholdthedoorafteryoupassthrough. AfterafewweeksofseeingkidstrytogetthroughdoorsintheschoolandwatchingthementerrestaurantsasthedoorhitotherpeopleIknewIhadtodiscusstheproblemwithmystudents.Teachingthemsmallactsofkindnesssuchaslettingsomeoneelsegothroughadoorfirstastheyholditopenmayseemunimportantbutitcangoalongwaytowardhelpingstudentsrealizehowtobepoliteandthankothers.Oncethey'vebeentoldthey'rehalfwaythere. Whenwehavetogoupmovingstairswewillstandtotheright.Thatwillgiveotherswhoareinahurryachoiceofwalkinguptheleft﹣handsideofthemovingstairs.Whenwearegoingtoenteralifttheundergroundoradoorwaywewillwaitforotherstoexitbeforeweenter. AftercollegewhenImovedtoLondonIwassurprisedathowpoliteeveryonewasinthesubways.IwasevenmoretouchedwhenItraveledtoJapan.Inbothplacespeoplemadeeffortstomakewayforothers.Onmovingstairseveryonestoodtotherightandwalkedtotheleft.Onliftseveryonewouldstandovertothesideandallowotherstoexitbeforetheywouldbegintoenter. 1.Whenyoucoughorsneezeyoushould. A.toucheverything B.coveryourmouth C.pointouttothekids D.passthegermstoothers 2.Ifyoucometoadoorandsomeoneisfollowingyouyou'dbetter. A.holdthedoor B.passthrough C.closethedoor D.standtotheside 3.Whyshouldwestandtotherightofmovingstairs A.Becauseit'sdangeroustostandtotheleft. B.Becauseit'satrafficrulewhichwemustfollow. C.Becausewemustwaitforotherstomovefirst. D.Becauseweshouldmakewayforpeopleinahurry. 4.Fromthepassagewecanknowthewriterisa. A.doctor B.traveler C.parent D.teacher 5.A.Thepassageismainlyabout. A.therulesofactsinpublic B.thewaysofcommunication C.theproblemsofmeetingpeople D.theknowledgeofsociallife
1分Withtheofsocietyourenvironmentisbecomingworseandworse.Soweshoulddowhatwecanourenvironment. A.developprotect B.developingtoprotect C.developmentprotect D.developmenttoprotect
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