如图所示b′是人眼在a处看见的河底一个白色鹅卵石这是由于光的折射形成的虚像若在a处用激光笔对准像b′照射则该激光能照射到河底的白色 Template




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tomski如图所示b′是人眼在a处看见的河底一个白色鹅卵石这是由于光的折射形成的虚像若在a处用激光笔对准像b′照射则该激光能照射到河底的白色 coloring