Question
The work function of a photoelectric material is $3.3 eV$. The threshold frequency will be equal to
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Answer
(d) ${\nu _0} = \frac{{{W_0}}}{h} = \frac{{3.3 \times 1.6 \times {{10}^{ - 19}}}}{{6.6 \times {{10}^{ - 34}}}} = 8 \times {10^{14}}Hz$
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