1.

The lowest frequency of light that will cause the emission of photoelectrons from the surface of a metal (for which work function is 1.65 eV) will be                                                                [JIPMER 2002]

A.            \[4\times {{10}^{10}}Hz\]       
B.            \[4\times {{10}^{11}}Hz\]
C.            \[4\times {{10}^{14}}Hz\]       
D.            \[4\times {{10}^{-10}}Hz\]
Answer» D.            \[4\times {{10}^{-10}}Hz\]


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