In a mixture of `H- He^(+)` gas (`He+ `is singly ionized He atom), `H` atom and `He+` ions are excited to their respective first excited state. 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+` lons after collisions with `H` atoms is -A. `6.5xx10^(-7)m`B. `5.6xx10^(-7)m`C. `4.8xx10^(-7)m`D. `4.0xx10^(-7m`

In a mixture of `H- He^(+)` gas (`He+ `is singly ionized He atom), `H`

1.	In a mixture of `H- He^(+)` gas (`He+ `is singly ionized He atom), `H` atom and `He+` ions are excited to their respective first excited state. 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+` lons after collisions with `H` atoms is -A. `6.5xx10^(-7)m`B. `5.6xx10^(-7)m`C. `4.8xx10^(-7)m`D. `4.0xx10^(-7m`
Answer» Correct Answer - C The wavelength corresponding to transition from `n=4` to `n=3` in `He^(+)` correspond to visible region.

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