1.

A hydrogen atom in its ground state absorbs 10.2 eV of energy. The orbital angular momentum is increased by [MP PET 1995; MP PMT 1997]

A.            \[1.05\times {{10}^{-34}}\]J-sec                                      
B.            \[3.16\times {{10}^{-34}}\]J-sec
C.            \[2.11\times {{10}^{-34}}\]J-sec                                      
D.            \[4.22\times {{10}^{-34}}\]J-sec (Given Planck constant \[h=6.6\times {{10}^{-34}}J-\]sec)
Answer» B.            \[3.16\times {{10}^{-34}}\]J-sec


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