1.

The work function of a photoelectric material is 3.3 eV. The threshold frequency will be equal to               [UPSEAT 1999]

A.            \[8\times {{10}^{4}}Hz\] 
B.            \[8\times {{10}^{56}}Hz\]
C.            \[8\times {{10}^{10}}Hz\]       
D.            \[8\times {{10}^{14}}Hz\]
Answer» E.


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