(Solved):   Ure below shows a graph of photocurrent vs cell voltage for a photoelectric effect experim ...

 

Ure below shows a graph of photocurrent vs cell voltage for a photoelectric effect experiment. a. What does the 'A' and 'B' in the figure represent? [2 marks] b. Describe the changes in 'A' and 'B' when the number of photons being shone on the surface per second is doubled and the wavelength of each of the photons is reduced. [ 2 marks] c. What changes in 'A' and 'B' would you expect to see if the metal under investigation is switched to one with a lower threshold frequency? [2 marks]