Question

The threshold wavelength for the ejection of electron from metal X Is 330 nm. The work function for photoelectric emission from metal X is

• A. J
• B. J
• C. J
• D. J

Answer 1

The correct option is C J

work function $h{v}_0=\frac{hc}{{\lambda }_0}=\frac{(6.6\times {10}^{-34}\times 3.0\times {10}^8)}{330\times {10}^{-9}}=6.0\times {10}^{-19}J$