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Unformatted text preview: . . . . . . . . . . . . . . . . . . . . . The graph below shows the variation with frequency f of the stopping potential VS for photoelectrons emitted from a metal surface. VS / V 2.0 V 1.5 1.0 0.5 0.0 0.9 1.0 1.1 1.2 1.3 1.4 1.5 f / 10 Hz 15 The photoelectric equation may be written in the form of the word equation photon energy = work function + maximum kinetic energy of electron. (b) (i) State this equation in terms of f and VS, explaining all other symbols you use. [3] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (This question continues on the following page) 2205- 6514 – 9 – M05/4/PHYSI/HP2/ENG/T...
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