Work function of a photoelectric material is 3.3 eV . threshold frequency will be equal to

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11.Dual Nature of Radiation and matter

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The work function of a photoelectric material is $3.3 eV$. The threshold frequency will be equal to

A

$8 \times {10^4}Hz$

B

$8 \times {10^{56}}Hz$

C

$8 \times {10^{10}}Hz$

D

$8 \times {10^{14}}Hz$

Solution

(d) ${\nu _0} = \frac{{{W_0}}}{h} = \frac{{3.3 \times 1.6 \times {{10}^{ – 19}}}}{{6.6 \times {{10}^{ – 34}}}} = 8 \times {10^{14}}Hz$

Standard 12

Physics

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