The threshold frequency for a photosensitive metal is \( 3.3 \times...

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The threshold frequency for a photosensitive metal is \( 3.3 \times 10^{14} \mathrm{~Hz} \). If light of frequency \( 8.2 \times 10^{14} \mathrm{~Hz} \) is incident on this metal, the cut-off voltage for the photoelectric emission is nearly
(a) \( 2 \mathrm{~V} \)
(b) \( 3 \mathrm{~V} \)
(c) \( 5 \mathrm{~V} \)
(d) \( 1 \mathrm{~V} \)
\( \mathrm{P} \)
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