When the surface of a metal is exposed to blue light electro
     When the surface of a metal is exposed to blue light, electrons are emitted. If the intensity of the blue light is increased, which of the following will also increase? A) the maximum kinetic energy of the ejected electrons B) the time lag between the onset of the absorption of light and the ejection of electrons C) the number of electrons ejected per second D) All of the above E) Two of the above O or roctrons ejected per second  
  
  Solution
C.

