The work functions for sodium and copper are `2 eV` and `4 eV` . Which of them is suitable for a photocell with `4000 Å` light ?

The work function of lithium and copper are 2.3 eV and 4.0 eV respectively. Which of these metals will be useful for the photo-electric cell working with visible light? Explain.

The work function for sodium and copper are 2.0 eV and 4.0 eV respectively. Find by calculation which of the two will be used for the photoelectric cell to work with light of wavelength 4000overset@A .

Work function of sodium and copper is 2.3 eV and 4.5 eV respectively.Ratio of their threshold wavelength will be…..

The work function of sodium is 2.3 eV . The threshold wavelength of sodium will be

The work function for potassium and caesium is 2.25 eV and 2.14 eV, respectively: with light of wavelength 5180overset@ A?

Which of the metal sodium and copper will be suitable for photelectric cell using light of wavelength 4000 Å . The work functions of sodium and copper are respectively 2.0 eV and 4.0 eV. Take h=6.6 xx 10^(-34) Js, c = 3.0 xx 10^(8) ms^(-1) and 1 eV = 1.6 xx 10^(-19) J

The work functions of tungsten and sodium are 5.06 eV and 2.53 eV respectively. If the threshold wavelenth for sodium is 5896 Å , then the threshold wavelength for the tungsten will be

The work functions of tungsten and sodium are 5.06 eV and 2.53 eV respectively. If the threshold wavelenth for sodium is 5896 Å , then the threshold wavelength for the tungsten will be

The work functions of tungsten and sodium are 5.06 eV and 2.53 eV respectively. If the threshold wavelenth for sodium is 5896 Å , then the threshold wavelength for the tungsten will be