Which of the following metal requires radiation of the lowest wavelength to cause emission of electrons?

Which of the following metals requires radiation of highest frequency to cause emission of electrons?

Which of the following metal requires radiation of highest frequency to cause emission of electrons?

Which of the following metal requires radiation of highest frequency to cause emission of electrons?

Which among the following electron will emit radiation of maximum wavelength ?

Which among the following electron will emit radiation of maximum wavelength ?

If a suface has work function of 3.00eV, the longest wavelength of light which will cause the emission of electrons is

If a suface has work function of 3.00eV, the longest wavelength of light which will cause the emission of electrons is