Threshold frequency for photoelectric effect on sodium corresponds to a wavelength $5000 Å$. Its work…

Threshold frequency for photoelectric effect on sodium corresponds to a wavelength $5000 Å$. Its work function is
  1. 15J
  2. $16 \times 10^{-14} \mathrm{~J}$
  3. $4 \times 10^{-19} \mathrm{~J}$
  4. $4 \times 10^{-18} \mathrm{~J}$

Solution

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Asked in: AP EAMCET 2020 (07 Oct Special)

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