Describe the Thomson’s e/m experiment by mutually perpendicular set-up of electric field and magnetic field; E and B. Derive in necessary steps how e/m would be determined by this set up from various known parameters such as E and B values.
Threshold wavelength of Tungsten is 2400 Angstrom. Tungsten is illuminated by a light of wavelength 1600 Angstrom. Whats the value of work function, maximum kinetic energy of electrons and stopping potential. Describe the ideas of Photoelectric effect. Who discovered photoelectric effect? Which scientist successfully explained this effect?