安徽省2023-2024学年度第二学期高二年级期末联考(物理)试卷答案试卷答案,我们目前收集并整理关于安徽省2023-2024学年度第二学期高二年级期末联考(物理)试卷答案得系列试题及其答案，更多试题答案请捕获只因吧
安徽省2023-2024学年度第二学期高二年级期末联考(物理)试卷答案试卷答案
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第二部分阅读（共两节，满分50分）第一节（共15小题；每小题2.5分，满分37.5分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项
A1.Asafirst-timee-paperuser,Iamnotsureifallthemomentarypixelation(isnormal.Thesizeisidealformynew-teenager.Therearehardlyanyannoyancesandthekidseemsenjoyingtheexperience.Theparentalcontrolsare,mildlyput,inadequate.Iwouldanticipatebeingabletodefinelock-downtimingsandlimitusagedurationforadevicetargetedatkids.—Miki2.Thisissuchalifesaver!Mysonreadsbooksconstantly.Weweredoingourbesttobuybooksandusethelibrary,butitwashittingourwalletshard.WiththeKindleFreeTimeincludedwiththisKindlekidsedition,hehasaccesstothousandsofbooks.Igettosettheageappropriatelimitsonthebookaccess.Asweliveonatightbudget,it'sgreattohaveaone-yearfreesubscriptiontoFreeTime.—Billie3.JustreceivedthisdevicetodayandI'mreadytothrowitoutthewindow.Navigationishorribleandevencustomerserviceadmittedthattheydon'tknowhowtohelp.It'sanightmaretryingtogetyourfreesubscriptionsetupastheyjustkeepredirectingyoutosetupa30-daytrialandbechargedafter.I'llbecancellingeverythingandsendingthisbackassoonaspossible.Catherine4.Thisisareader'skindle.Wewantourchildrentoread-notplayvideogamesallday.Fromthemomentwereceivedthisdeviceasagift,ourkidshadimmediateaccessto55booksthatwehadpurchasedthroughourAmazonaccount.Nowtheycancarryaroundawholelibraryofbooks.Nottomentionallofthefreeoutofcopyrightmaterialthatisavailable.-Norah21.WhatdoesBilliesayaboutKindle?A.Itcansavehisson'slife.B.Ithasnoparentalcontrols.C.Itsaveshimalotofmoney.D.Itoffersfreebookspermanently.22.Whomaygivethedevicethelowestrating?A.Miki.B.Billie.C.Catherine.D.Norah.23.Whatarethefourtexts?A.Bookreports.B.Diaryentries.C.Tabletadvertisements.D.Customerreviews.BWhenIwinatmyfavouritegames,myopponentstendtosay:'Oh,you'resocompetitive!'ButwhenIlose,theysmilegood-naturedlyandsay:Badluck!Goodgame!'Thissuggeststhataccuratesportingexpressionsshouldgosomethinglikethis:Iamsporty.Youarecompetitive.Theycan'tbeartolose.Or:Igaveitago.Youdidyourbest.Hetrieddesperatelyhard.I'mnotsayingIdon'thaveacompetitivepersonality.Wealldo.Onwalks,Iliketobeoutinfront.Intrafficjams,Ifindmyselffocusingoncarsinotherlanes,andfretiftheyedgeaheadofme.Itenseupwhilewaitingfortrains,determinedtobefirstaboard.英语·第3页（共8页）
7.如图所示,在平面直角坐标系xOy中,以O点为圆心、半径为r的圆形区域内存在垂直于坐标平面的匀强磁场,两个质量均为m、电荷量均为q的相同带电粒子沿x轴正方向以速度v射人磁场区域。两粒子进入磁场前轨迹间的距离为r且关于x轴对称,最后都从y轴上的A点射出磁场,不计带电粒子的重力、粒子间的相互作用和空气阻力,则磁感应强度的大小为A.mv2qrB.2mv2qrC.mvqrD.2mvqr1
7.A、B为两种长度和材料相同、横截面积不同的圆柱形导体,连接在如图的电路中,下列物理量大小判断正确的是BA.RAUBC.UA=UBD.lA<lB
(2)(10分)2021年被誉为“MiniLED商用元年”,MiniLED是“次毫米发光二极管”,指尺寸为100300微米的LED芯片。液晶电视采用了MiniLED技术,在屏幕后面设置多个LED灯珠,实现了对屏幕处的精准光控,极大提高了收视效果。如图甲、乙为某款电视屏幕和处于屏幕后面的一个灯珠MNPQ示意图,若该LED灯珠是边长为a的正方形,厚度不计,可看成由无数个点光源构成的面光源。已知屏幕厚度为d,,其面积足够大,LED光射出屏幕的最短时间为t,真空中的光速为C0(i)求该屏幕材料的折射率n;(i)如果折射率控制不好,我们看到的面积比实际灯珠面积大,就会形成光晕,影响收视效果,求该LED灯珠发出的光在屏幕上实际照亮的区域比自身面积大了多少。
