In an experiment to investigate the relationship between energy of radiation and stopping potential, the results were shown in a graph below. (Velocity of light = 3 x 108 ms1 and e = 1.6 x 1019c). From the graph determine: The threshold frequency. (1 mark) The threshold wavelength. (2 marks) (3 marks) Planck’s constant. The work function. (3 marks) a) A ray of light is incident on a plane mirror as shown in figure 9 below. Figure 9 What is the angle of reflection? (1 mark)
In an experiment to investigate the relationship between energy of radiation and stopping potential, the results were shown in a graph below. (Velocity of light = 3 x 108 ms1 and e = 1.6 x 1019c). From the graph determine: The threshold frequency. (1 mark) The threshold wavelength. (2 marks) Planck’s constant. (3 marks) The work function. (3 marks) a) A ray of light is incident on a plane mirror as shown in figure 9 below. Figure 9 What is the angle of reflection? (1 mark)
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