1.

Energy of an electron in an excited hydrogen atom is ? 3.4 eV. Its angular momentum will be: \[h=6.626\times {{10}^{-34}}J-s\] [UPSEAT 1999; Kerala PET 2002]

A.            \[1.11\times {{10}^{34}}J\ \sec \]  
B.            \[1.51\times {{10}^{-31}}J\ \sec \]
C.            \[2.11\times {{10}^{-34}}J\ \sec \] 
D.            \[3.72\times {{10}^{-34}}J\ \sec \]
Answer» D.            \[3.72\times {{10}^{-34}}J\ \sec \]


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