（2006?房山区二模）如图所示，P为一物体，虚线框内有一透镜，隔着该透镜看到了放大的、正立的像，在方框
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PS\uff1a\u50cf\u8ddd\u4e0e\u7269\u8ddd\u77e5\u9053\u5427\uff0c\u8fd9\u662f\u6211\u4e00\u4e2a\u5b57\u4e00\u4e2a\u5b57\u6253\u4e0a\u6765\u7684\uff0c\u5e0c\u671b\u80fd\u7ed9\u4f60\u70b9\u5e2e\u52a9
:-)
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\u6b63\u7acb\u6216\u5012\u7acb \u653e\u5927\u6216\u7f29\u5c0f\u865a\u50cf\u6216\u5b9e\u50cf \u4e0e\u7269\u540c\u4fa7\u4e0e\u5f02\u4fa7\u50cf\u8dddv
u>2f \u5012\u7acb\u7f29\u5c0f \u5b9e\u50cf\u5f02\u4fa7 f<v<2f
u=2f \u5012\u7acb\u7b49\u5927 \u5b9e\u50cf\u5f02\u4fa7 v=2f \u6b64\u65f6\u7269\u4f53\u4e0e\u50cf\u7684\u8ddd\u79bb\u662f\u6700\u5c0f\u7684\uff0c\u65e24\u500d\u7126\u8ddd\u3002
f2f
u=f \u4e0d\u6210\u50cf \u5e73\u884c\u5149\u6e90\uff1a\u63a2\u7167\u706f
u<f \u6b63\u7acb \u653e\u5927 \u865a\u50cf \u540c\u4fa7 u,v\u540c\u4fa7
\u8fd9\u5c31\u662f\u4e3a\u4e86\u8bc1\u5b9e\u90a3\u4e2a\u89c4\u5f8b\u800c\u8bbe\u8ba1\u7684\u8868\u683c\u3002\u5176\u5b9e\uff0c\u900f\u955c\u6210\u50cf\u6ee1\u8db3\u900f\u955c\u6210\u50cf\u516c\u5f0f\uff1a
1/u(\u7269\u8ddd)+1/v\uff08\u50cf\u8ddd\uff09=1/f\uff08\u900f\u955c\u7126\u8ddd\uff09
\u7167\u76f8\u673a\u8fd0\u7528\u7684\u5c31\u662f\u51f8\u900f\u955c\u7684\u6210\u50cf\u89c4\u5f8b
\u955c\u5934\u5c31\u662f\u4e00\u4e2a\u51f8\u900f\u955c\uff0c\u8981\u7167\u7684\u666f\u7269\u5c31\u662f\u7269\u4f53\uff0c\u80f6\u7247\u5c31\u662f\u5c4f\u5e55
\u7167\u5c04\u5728\u7269\u4f53\u4e0a\u7684\u5149\u7ecf\u8fc7\u6f2b\u53cd\u5c04\u901a\u8fc7\u51f8\u900f\u955c\u5c06\u7269\u4f53\u7684\u50cf\u6210\u5728\u6700\u540e\u7684\u80f6\u7247\u4e0a
\u80f6\u7247\u4e0a\u6d82\u6709\u4e00\u5c42\u5bf9\u5149\u654f\u611f\u7684\u7269\u8d28\uff0c\u5b83\u5728\u66dd\u5149\u540e\u53d1\u751f\u5316\u5b66\u53d8\u5316\uff0c\u7269\u4f53\u7684\u50cf\u5c31\u88ab\u8bb0\u5f55\u5728\u80f6\u5377\u4e0a
\u81f3\u4e8e\u7269\u8ddd\u3001\u50cf\u8ddd\u7684\u5173\u7cfb\u4e0e\u51f8\u900f\u955c\u7684\u6210\u50cf\u89c4\u5f8b\u5b8c\u5168\u4e00\u6837
\u7269\u4f53\u9760\u8fd1\u65f6\uff0c\u50cf\u8d8a\u6765\u8d8a\u8fdc\uff0c\u8d8a\u6765\u8d8a\u5927\uff0c\u6700\u540e\u518d\u540c\u4fa7\u6210\u865a\u50cf\u3002
\u7269\u8ddd\u589e\u5927\uff0c\u50cf\u8ddd\u51cf\u5c0f\uff0c\u50cf\u53d8\u5c0f\uff1b\u7269\u8ddd\u51cf\u5c0f\uff0c\u50cf\u8ddd\u589e\u5927\uff0c\u50cf\u53d8\u5927\u3002
\u4e00\u500d\u7126\u8ddd\u5206\u865a\u5b9e\uff0c\u4e8c\u500d\u7126\u8ddd\u5206\u5927\u5c0f\u3002
\u51f8\u900f\u955c\u6210\u50cf\u89c4\u5f8b\u8868\uff1a\uff08\u524d\u9762\u51e0\u70b9\u662f\u6211\u6253\u7684\uff0c\u540e\u9762\u7684\u662f\u5e2e\u4f60\u627e\u7684\uff09
\u5404\u957f\u5ea6\u5173\u7cfb\u5982\u56fe\u6240\u793a\uff1a
\u6839\u636e\u76f8\u4f3c\uff0c\u50cf\u662f\u7269\u7684\u4e09\u500d\uff0c\u5219\u50cf\u5230\u955c\u7684\u8ddd\u79bb\u4e3a60
\u8bbe\u7126\u8ddd\u4e3au\uff0cAB\u957f\u5ea6\u4e3aa\uff0cA1B1\u7684\u957f\u5ea6\u4e3a3a
\u53ef\u5f97\u6bd4\u4f8b\u5f0f\uff1aa/u\uff1d3a/\uff0860\uff0du\uff09
\u7ea6\u6389a\u89e3\u5f97u\uff1d15
物体放在凸透镜的焦点以内，在物体的另一侧将看到正立、放大的虚像，故填凸透镜，如图所示：
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绛旓細璋冭妭澶╁钩鏃讹紝搴斿皢娓哥爜鏀惧湪鏍囧昂鐨勯浂鍒诲害绾垮锛庡綋鎸囬拡鍋忓彸鏃讹紝璇存槑鍙充晶璐ㄩ噺澶э紝搴斿皢骞宠 铻烘瘝鍚戝乏绉诲姩锛涘浘涓ぉ骞崇殑绀烘暟涓100g+50g+4.4g=154.4g锛涢噾灞炲潡鐨勪綋绉负70cm3-50cm3=20cm3锛涢噾灞炲潡鐨勫瘑搴ο=mV=154.4g20cm3=7.72脳103kg/m3锛庢晠绛旀涓猴細闆跺埢搴︾嚎锛屽乏锛154.4锛7.72脳103kg/m3锛
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绛旓細褰撴按浣嶅埌杈捐鎴掓按浣嶆椂锛屾帶鍒剁數璺帴閫氾紝鐢佃矾涓湁浜嗙數娴侊紝鐢电閾佸叿鏈夌鎬э紝鍚稿紩琛旈搧锛岃閾佷笅闄嶏紝甯﹀姩鍔ㄨЕ鐐逛笅绉伙紝浣垮伐浣滅數璺腑鐏疞1鎵鍦ㄧ殑鏀矾鎺ラ氾紝鎵浠ョ伅L1浜紟鏁呯瓟妗堜负锛歀1
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绛旓細浠庣數鑳借〃涓婂彲浠ョ湅鍑虹數鑳借〃鐨勭ず鏁颁负1856.3锛屾渶鍚庝竴浣嶆槸灏忔暟锛屽崟浣嶆槸kW?h锛屾晠鐢佃兘琛ㄧ殑璇绘暟涓1856.3kW?h锛庢晠绛旀涓猴細1856.3锛
绛旓細鐢卞浘鍙煡锛氭粦鍔ㄥ彉闃诲櫒R涓庡畾鍊肩數闃籖0涓茶仈锛庡綋鍙橀樆鍣≧=10惟鏃讹紝鐢垫祦琛ㄧ殑绀烘暟涓0.4A锛屽綋鍙橀樆鍣≧鈥=8惟鏃讹紝鐢佃矾涓殑鎬婚樆鍊煎噺灏忥紝鏍规嵁I=UR鎬诲彲鐭ワ細鐢垫祦澶т簬0.4A锛涘啀鏍规嵁涓茶仈鐢佃矾璧峰垎鍘嬩綔鐢紝涓斿彉闃诲櫒涓ょ鐨勭數鍘嬪簲鍑忓皬锛屽嵆锛氬簲灏忎簬褰撳彉闃诲櫒R=10惟鏃朵袱绔殑鐢靛帇U=I1R=0.4A脳10惟=4V锛涜岃嫢鐢佃矾涓數娴佷负...
绛旓細鈭祊=蟻gh锛屸埓鈻砲=鈻硃蟻g=100Pa1.0脳103kg/m3脳10N/kg=1100m锛岀墿鍧楅湶鍑烘按闈㈢殑浣撶Н涓猴細V闇=S鈻砲=10-2m2脳1100m=10-4m3锛岀墿鍧楁帓寮姘寸殑浣撶Н锛歏鎺=V-V闇=2脳10-4m3-10-4m3=10-4m3锛屾牴鎹潬鏉嗗钩琛℃潯浠跺緱锛岋紙m绌烘《+m鐮傚瓙锛塯脳OA=锛坢鐗╁潡g-F娴級脳OB锛岋紙1kg+m鐮傚瓙锛塯脳OA=锛1....
绛旓細鐏场涓庢粦鍔ㄥ彉闃诲櫒涓茶仈锛屾粦鍔ㄥ彉闃诲櫒涓嬮潰鎺ョ嚎鏌卞繀椤绘帴鍦ㄥ乏闈㈢殑鎺ョ嚎鏌变笂锛濡傚浘鎵绀猴細
