A sample of hydrogen atoms is in excited state (all the atoms). The photons emitted from this sample are made to pass through a filter through which light having wavelength greater
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A sample of hydrogen atoms is in excited state (all the atoms). The photons emitted from this sample are made to pass through a filter through which light having wavelength greater A sample of hydrogen atoms is in excited state (all the atoms). The photons emitted from this sample are made to pass through a [...]