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Solve the following examples 1 How many revolutions does an electron perform before making transition...

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Solve the following examples 1 How many revolutions does an electron perform before making transition from n 2 to n 1 state in hydrogen atom The average life time of first excited state in H atoms is 108 s R 1 097 x 107 m Ans 8 23 x 10 2 Calculate the wavelength and energy in eV of a photon emitted when in a hydrogen atom an electron makes a transition from the third excited state to the ground state R 1 097 x 107 m c 3 x 108 ms and h 6 625 x 10 34 Js Ans 9 72 x 108 m 12 76 eV 3 Calculate the maximum wavelength of Balmer series in the hydrogen spectrum Calculate the corresponding wave number R 1 097 x 107 m Ans 6563 1 52 106 m 4 The H line in Balmer series of the hydrogen spectrum has a wavelength 6563 From this calculate the wavelength for the first line of the Lyman series Ly Ans 1215

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