• 2022-07-28
    一束具有两种波长[img=17x22]1803a11548d0e77.png[/img]和[img=17x22]1803a115517c7e0.png[/img]的平行光垂直照射到一衍射光栅上,测得波长[img=17x22]1803a11548d0e77.png[/img]的第三级主极大衍射角和[img=17x22]1803a115517c7e0.png[/img]的第四级主极大衍射角均为30°。已知[img=17x22]1803a11548d0e77.png[/img] = 5600 Å,试问光栅常数a+b= 及波长[img=17x22]1803a115517c7e0.png[/img]= 。
    A: [img=113x24]1803a1157cd743d.png[/img],3800 Å
    B: [img=113x24]1803a1157cd743d.png[/img],4200 Å
    C: [img=113x24]1803a1158ef7660.png[/img],4200 Å
    D: [img=113x24]1803a1158ef7660.png[/img],3800 Å
  • 举一反三