[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fkbeCoUUweUpYj9HfFms9RlM3vwKVZu0fQpbwOyA75zE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-11-28 08:28:53",243822679,[8,9,10,11],"1倍","2倍","3倍","4倍",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},146,"7694a04e4fcf63ee3d4d80217ceaa65d","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c1e48361b00f3ee2086f4e259ed792b.jpg","大学物理B","work_48596331","作业7-光的衍射.xls.xls.xls","一衍射光栅的狭缝宽度为a,缝间不透光部分宽度为b,用波长为600nm的光垂直照射时,在某一衍射角φ处出现第2级主极大.若换用400nm的光垂直照射,在上述衍射角φ处出现第一次缺级,则b为a的( )",[21,32,41,50,59,68,77,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],243822673,[25,26,27,28],"若屏上P点处为第2级明纹,则单缝处波面相应地可划分为 5个半波带","若将单缝宽度加倍,P点还是明纹","缝宽加倍,条纹宽度也加倍","缝宽减半, 条纹宽度不变","单色平行光垂直入射于单缝上,观察夫琅禾费衍射,则( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],243822674,[36,37,38,39],"3","4","5","7","在宽度a=0.60mm的狭缝后面80cm处,有一个与狭缝平行的屏幕,以波长为600nm的平行光自左向右垂直照射狭缝时,在距中央明条纹中心x=2.8mm处的P点,看到的是明条纹,则从P点看狭缝时,将其分割的半波带数为( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],243822675,[45,46,47,48],"变小","变大","不变","不确定","观察屏幕上得到的单缝夫琅禾费衍射图样.当入射光波长变大时,中央条纹的宽度将( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],243822676,[54,55,56,57],"λ\u002F2","λ","2λ","3λ","波长为λ的单色平行光,垂直照射到宽度为a的单缝上.若衍射角φ=30°时,对应的衍射图样为第1级极小,则缝宽a为( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],243822677,[63,64,65,66],"宽度变小","宽度变大","宽度不变,且中心强度也不变","宽度不变,但中心强度增大","在单缝夫琅禾费衍射实验中,若增大缝宽,其他条件不变,则中央明条纹( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],243822678,[72,73,74,75],"与仪器的孔径成正比,而与光的波长成反比","与仪器的孔径成反比,而与光的波长成正比","与仪器的孔径和光的波长都成正比","与仪器的孔径和光的波长都成反比","关于光学仪器的分辨率,下列说法中正确的是( )",{"answer":78,"createTime":5,"id":6,"options":79,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],243822680,[84,85,86,87],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff1bf58130d3392f51ace41cdb6504bab.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F053c12286e6e97d1c81b7d83c81654d5.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbeacbca308dcece871647da783d14f0d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F859a2d1686f04b9a805ab85ede7e4887.png\">","一束平行单色光垂直入射在光栅上,当光栅常数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fff4f745ba02adf52dda0a9e933b9f87d.png\">为下列那种情况时(\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F69a48fefd33cd6160c31522a819600e5.png\">代表每条缝的宽度),k=3、6、9…级次的主极大均不出现?则( )",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],243822681,[93,94,95,96],"5.00km","6.00km","2.5km","2.44km","迎面驶来的汽车两盏前灯相距1.22m,假设人的眼瞳直径为3.00mm,而入射光波长为600.00nm.则人眼睛刚好能分辨这两盏前灯时汽车距离为( )",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],243822682,[102,103,104,105],"在单缝夫琅和费衍射中,中央主极大的半角宽度为 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25cbcf715b5dc8a77e331c8d16d68415.png\">","在单缝夫琅和费衍射中,各级亮条纹光强相同","在单缝夫琅和费衍射中,各次极大的角宽度和主极大相同","圆孔的夫琅和费衍射中,艾里斑集中了衍射光能的20%","关于衍射现象,下列说法正确的是( )"]