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Question 1 (20 marks) The cutoff wavelength of the lead metal, A, is 300nm. (a) Calculate the work function for tungsten
Posted: Tue Jun 07, 2022 9:45 am
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- Question 1 20 Marks The Cutoff Wavelength Of The Lead Metal A Is 300nm A Calculate The Work Function For Tungsten 1 (37.01 KiB) Viewed 53 times
Question 1 (20 marks) The cutoff wavelength of the lead metal, A, is 300nm. (a) Calculate the work function for tungsten in units of Joules (J) and eV. [6 marks] (b) When radiation of wavelength 200 nm is used. Calculate: (i) The maximum kinetic energy of the electrons (in unit of J). [4 marks] (ii) The stopping potential. [4 marks] (iii) Explain in your own words for the term stopping potential. [6 marks]