The Ultraviolet light is incident normally on the surface of a certain substance. The binding energy of electrons in this substance is around 3.44 eV. The incident light consists of an intensity of 0.063 W/m2. The electrons are photo electrically emitted having a maximum speed of 4.4 x 105 m/s. Determine how many electrons are emitted from the square centimeter of the surface each second? Suppose that the absorption of each and every photon ejects an electron.