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1. The famous alien jadu on his visit to our planet earth brought a sample containing 100 identical H - like atoms (hypothetical atoms, 2 can be fractional) from his planet. He gave these atoms to Rohit (Hritik Roshan) asking him to analyze them. He further gave Rohit the following information's: 1. Out of the given atoms, some are in ground state and some others are in a higher energy level (n = x) and the potential energy of electron in the ground state of given atom is - 192 eV. 2. When the sample is exposed to radiations of wavelength 155 nm, the electrons jump to another higher energy level (n = x + 3). Upon back - transition upto ground state, a total of 10 different spectral lines are produced. Then, jadu asked Rohit two questions: (a) "What is the final state in which the electrons move after absorbing photons of wavelength 155 nm ?"​

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