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TS EAMCET 03 May 2019 Shift 2 Solved Paper

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Question : 116

Total: 160

To excite the spectral line of wavelength 4960 A of an atom, an excitation energy of 7.7 eV is required. The ground state energy of the atom is 10.5 eV. The energies of two levels involved in the emission of 4960 A line are (Assume he = 1240 eV-nnm, where h is Planck constant and c is speed of light)

14.2 eV , 16.1 eV
12.2 eV , 18.2 eV
15.7 eV , 20.5 eV
15.7 eV , 18.2 eV

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