I Just Want To Know If Im Right Or Wrong 1 (154.18 KiB) Viewed 43 times
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Plot a graph between frequency (f) vs maximum kinetic energy (Ekmax) - Use Graph Sheet Energy V O 7 of m Conclusion: [5 marks] Model Graph Energy of electrons vs frequency of light (for photoelectric cell) x-intercept is threshold frequency gradient = the Planck constant -y-intercept is work function frequency [1DA14 Hz) 1) From the graph, calculate the following: 1. Planck's Constant (h): tan 0= p/b = 4x10-¹⁹/5.5 x10¹4 = 11.6x10-34 J.S
2. Threshold frequency (f): 5.5 x10¹4 Hz FSE10025 Engineering Physics Photoelectric Effect 3. Work function of the metal (): 4x1.6 x10-1⁹ Joule = 4ev = 6.4 x10-¹⁹ Joule
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