JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 33
question_answer
Calculate the wavelength in \[\overset{{}^\circ }{\mathop{A}}\,\] of the photon that is emitted when an electron in Bohr orbit with n = 2 returns to orbit with n = 1 in H atom. The ionisation potential of the ground state of H-atom is \[2.17\times {{10}^{-11}}erg.\]