Question: 2016-PHYSICS-EN.pdf - Foxit PDF Reader 8 -1 - X File Home Comment View Form Protect Foxit eSign Share Help Tell me... Q Find . .

2016-PHYSICS-EN.pdf - Foxit PDF Reader 8 -1 - X File Home Comment View Form Protect Foxit eSign Share Help Tell me... Q Find . . . Eg 53 Lo 8 7 User Help Command Post Your Foxit Set to Default Register About Foxit Manual Center Line Help Idea Plug-Ins PDF Reader PDF Reader Edit PDF like a Start 2013-PHYSICS-EN.pdf 2016-PHYSICS-EN.pdf X 2016_PHYSICS_SOLUT... SC word processor Page 2/3 Marks W The graph below shows the stopping potential as a function of the frequency of the light source. stopping potential / V 3 2 frequency / 1014 Hz iii. Explain what is meant by the work function of a metal. 4 marks iv. Use the graph to determine, without calculation, the work function, 2 marks of the metal coating the photocathode, and give the value in ev. b) We represent the energy levels of the He ion as:

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