如图7甲所示一束太阳光通过三棱镜后在光屏上形成一条彩色光带这是由于三棱镜对不同色光的 不同而产生的由此可以推理得到凸透镜的焦距会因透过 Template




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tomski如图7甲所示一束太阳光通过三棱镜后在光屏上形成一条彩色光带这是由于三棱镜对不同色光的 不同而产生的由此可以推理得到凸透镜的焦距会因透过 coloring