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Atoms and Nuclei question

2008 · Shift 1 · Q66
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  5. /2008 · Shift 1 · Q66

Atoms and Nuclei question

2008 · Shift 1 · Q66

JEE AdvancedPhysicsAtoms and NucleiMCQ+3 / −1
In a mixture of H - He +^++ gas (He +^++ is singly ionized He atom), H atoms and He +^++ ions are excited to their respective first excited states. Subsequently, H atoms transfer their total excitation energy to He +^++ ions (by collisions). Assume that the Bohr model of atom is exactly valid.The ratio of the kinetic energy of the n=2n=2n=2 electron for the H atom to that of He +^++ ion is
  1. A
    14\frac{1}{4}41​
  2. B
    12\frac{1}{2}21​
  3. C
    1
  4. D
    2
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