试题与答案

不定项选择如图所示,在水中有一厚度不计的薄玻璃片做成的中空三棱镜,里面是空气,一

题型:不定项选择

题目:

不定项选择
如图所示,在水中有一厚度不计的薄玻璃片做成的中空三棱镜,里面是空气,一束光A从棱镜的左边射入,从三棱镜的右边射出时发生色散,射出的可见光分布在a点和b点之间,则(   )

A.从a点射出的是红光,从b点射出的是紫光

B.从a点射出的是紫光,从b点射出的是红光

C.从a点和b点射出的都是紫光,从ab中点射出的是红光

D.从a点和b点射出的都是红光,从ab中点射出的是紫光

答案:

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