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Atoms and Nuclei question

2019 · 12 Apr · Shift 2 · Q57
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Atoms and Nuclei question

2019 · 12 Apr · Shift 2 · Q57

JEE MainPhysicsAtoms and NucleiMCQ+4 / −1
Consider an electron in a hydrogen atom revolving in its second excited state (having radius 4.65 Ao\mathop A\limits^oAo​). The de-Broglie wavelength of this electron is :
  1. A
    6.6 Ao\mathop A\limits^oAo​
  2. B
    3.5 Ao\mathop A\limits^oAo​
  3. C
    9.7 Ao\mathop A\limits^oAo​
  4. D
    12.9 Ao\mathop A\limits^oAo​
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