已知某单色光照射到一金属表面产生了光电效应,若此金属的逸出电势是U0(使电子从金属逸出需作功eU0),则此单色光的波长l必须满足:()
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未知类型:{'options': ['[tex=3.714x2.571]lfe5qYoR9tyiSzxZli4YnGwivI91pvi/n9BRs/fJNu968G545rUWTw75LhU5y6Z7[/tex]', '[tex=3.714x2.571]SGfb+dZx7AHf4Dxsp8WzYSAknpi+LsGUltrRDEnr1Ixc5akvtGaUdNhRlXcf/lBq[/tex]', '[tex=3.714x2.429]lfe5qYoR9tyiSzxZli4YnDLDbRvq6rmafaK6dWodjjcLC0vAbmfXfOWB+N2UpJkB[/tex]', '[tex=3.714x2.429]SGfb+dZx7AHf4Dxsp8WzYXtdE1437VCyiXRrJywpHx8JHaajxSjJ5dlRO+fnVw9r[/tex]'], 'type': 102}
举一反三
- 已知某单色光照射到一金属表面产生了光电效应,若此金属的逸出电势是U0 (使电子从金属逸出需作功eU0),则此单色光的波长l 必须满足[ ]
- 【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=
- >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
- set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
- 已知某单色光照射到一金属表面产生光电效应,若此金属的逸出电势是U0(使电子从金属逸出需做功eU0),则此单色光的波长A必须满足:(A)λ≤hc/(eU0) (B)λ≥hc/(eU0)(C)λ≤eU0/(hc) (D)λ≥eU0/(hc)