A hydrogen atom in its ground state absorbs 10.2 eV of energy. The orbital angular momentum is increased by
(a) J-sec (b) J-sec
(c) J-sec (d) J-sec
(Given Planck constant h = J-sec)
(a) Electron after absorbing 10.2 eV energy goes to its first excited state (n=2) from ground state (n = 1).
Increase in momentum =