Two metals \( \mathrm{X} \) and \( \mathrm{Y} \) have work function...

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Two metals \( \mathrm{X} \) and \( \mathrm{Y} \) have work functions \( 12 \mathrm{eV} \) and
\( \mathrm{P} \)
\( 3 \mathrm{eV} \) respectively. Which metal has a higher
W
threshold wavelength?
(1) \( \mathrm{X} \)
(2) \( \mathrm{Y} \)
(3) Both (1) and (2) (4) None of these
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