Light of wavelength 330 nm falling on a piece of metal ejects electrons with sufficient energy which requires voltage V0 to prevent a electron from reading collector. In the same setup, light of wavelength 220 nm, ejects electrons which require twich the voltage V0 stop them in reaching a collector. Find the numerical value of voltage V0 . (take plank’s constant, h = 6.6 × 10–34 Js and 1 eV = 1.6 × 10–19 J)
