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光子说和光电效应

Release time:

2019-11-12 15:44

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　　某金属在一束黄光照射下，恰好能有电子逸出(即用频率小于这种黄光的光线照射就不可能有电子逸出)。在下述情况下，逸出电子的多少和电子的最大初动能会发生什么变化?

　　(1)增大光强而不改变光的频率 (2)用一束强度更大的红光代替黄光

　　(3)用强度相同的紫光代替黄光

光电效应,黄光,电子,代替,频率,一束,强度,这种,动能,变化

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