1.

Energy of a quanta of frequency \[{{10}^{15}}\]Hz and \[h=6.6\times {{10}^{-34}}J\text{-}\sec \] will be                                   [RPMT 1997]

A.            \[6.6\times {{10}^{-19}}J\]     
B.            \[6.6\times {{10}^{-12}}J\]
C.            \[6.6\times {{10}^{-49}}J\]     
D.            \[6.6\times {{10}^{-41}}J\]
Answer» B.            \[6.6\times {{10}^{-12}}J\]


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