The maximum kinetic energy of the emitted photoelectrons in photoelectric effect is independent of:

The work functions of Caesium $$(\mathrm{Cs})$$, potassium $$(\mathrm{K})$$ and Sodium (Na) are $$2.14 ~\mathrm{eV}, 2.30 ~\mathrm{eV}$$ and $$2.75 ~\mathrm{eV}$$ respectively. If incident electromagnetic radiation has an incident energy of $$2.20 ~\mathrm{eV}$$, which of these photosensitive surfaces may emit photoelectrons?

The minimum wavelength of $$X$$-rays produced by an electron accelerated through a potential difference of $$V$$ volts is proportional to :

The light rays having photons of energy 4.2 eV are falling on a metal surface having a work function of 2.2 eV. The stopping potential of the surface is