Solved papers for JEE Main & Advanced JEE Main Paper (Held On 12 May 2012)
done JEE Main Paper (Held On 12 May 2012) Total Questions - 2
question_answer1) A hypothetical atom has only three energy levels. The ground level has energy, \[{{E}_{1}}=-8eV.\]The two excited states have energies, \[{{E}_{2}}=-6eV\]and\[{{E}_{3}}=-2eV.\]Then which of the following wavelengths will not be present in the emission spectrum of this atom?
JEE Main Online Paper (Held On 12 May 2012)
question_answer2) A doubly ionised Li atom is excited from its ground state (n=1) to n=3 state. The wavelengths of the spectral lines are given by \[{{\lambda }_{32}},{{\lambda }_{31}}\]and\[{{\lambda }_{21}}.\]The ratio \[{{\lambda }_{32}}/{{\lambda }_{31}}\]and\[{{\lambda }_{21}}/{{\lambda }_{31}}\]are, respectively
JEE Main Online Paper (Held On 12 May 2012)