engineering recuitment ISRO Scientific Assistant Physics 2020 Physics Dual Nature: Photon and Matter Waves Einstein’s Photoelectric Equation
In the experiment of photoelectric effect ultraviolet light of wavelength 270 nm is used on a metal plate cathode. If the stopping potential of the metal is 4 eV, find the work function of that metal plate? Given (h c) = 1242 eV-nm.
1
0.6 eV
2
1 eV
3
1.6 eV
4
4 eV