• 2022-06-11
    一束平行光垂直入射到某个光栅上,该光束有两种波长的光[img=95x22]1803a91c5daea8a.png[/img]和[img=95x22]1803a91c65b234a.png[/img]。实验发现两种波长的谱线(不记中央明纹)第二次重合于衍射角Φ=60˚的方向上,此光栅的光栅常数d=
    A: [img=114x24]1803a91c6dd3c37.png[/img]
    B: [img=114x24]1803a91c76b4265.png[/img]
    C: [img=114x24]1803a91c7f63b56.png[/img]
    D: [img=114x24]1803a91c872641c.png[/img]
  • 举一反三