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Atoms and Nuclei question

2008 · Shift 1 · Q65
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  5. /2008 · Shift 1 · Q65

Atoms and Nuclei question

2008 · Shift 1 · Q65

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 wavelength of light emitted in the visible region by He +^++ ions after collisions with H atoms is
  1. A
    6.5×10−76.5\times10^{-7}6.5×10−7 m
  2. B
    5.6×10−75.6\times10^{-7}5.6×10−7 m
  3. C
    4.8×10−74.8\times10^{-7}4.8×10−7 m
  4. D
    4.0×10−74.0\times10^{-7}4.0×10−7 m
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