1.

The frequency of a photon, having energy 100 \[eV\] is\[(h=6.6\,{{10}^{-34}}\,J\text{-}sec)\]                               [AFMC 2000]

A.            \[2.42\times {{10}^{26}}Hz\] 
B.            \[2.42\times {{10}^{16}}Hz\]
C.            \[2.42\times {{10}^{12}}Hz\] 
D.            \[2.42\times {{10}^{9}}Hz\]
Answer» C.            \[2.42\times {{10}^{12}}Hz\] 


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