a beam of parallel rays is reflected from a smooth plane surface.after reflection the rays will be A.convergingB.divergingC.parallelD.diffusedE.focusedA与E意思有什么不同?B与D意思有什么不同?问的是词汇,

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abeamofparallelraysisreflectedfromasmoothplanesurface.afterreflectiontherayswillbeA.convergingB.dive

a beam of parallel rays is reflected from a smooth plane surface.after reflection the rays will be A.convergingB.divergingC.parallelD.diffusedE.focusedA与E意思有什么不同?B与D意思有什么不同?问的是词汇,
a beam of parallel rays is reflected from a smooth plane surface.after reflection the rays will be
A.converging
B.diverging
C.parallel
D.diffused
E.focused
A与E意思有什么不同?B与D意思有什么不同?
问的是词汇,

a beam of parallel rays is reflected from a smooth plane surface.after reflection the rays will be A.convergingB.divergingC.parallelD.diffusedE.focusedA与E意思有什么不同?B与D意思有什么不同?问的是词汇,
A和E的区别:
A是汇合、聚合,比如原来有3束光,现在合到一起,变成了1束.
E是聚焦,原来的一束光照射的面积有碗口大,现在只有针尖大.
B和D的区别:
B是分开,比如原来的1束光,现在变成3束.
D是散开,比如原来的1束光,现在四散漫射出去,分不出还有几束了.
不过这句话好像涉及不到这些区别,答案应该是C吧,平行光在光滑镜面反射后仍应该是平行光.

A只有收敛的意思,而E是汇聚成焦点

对于光线来说A与E,B与D没什么不同,这也印证了选C。

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