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Fig. 4 shows a photocell.
(i) Label the cathode and anode.
(ii) How are electrons produced in the cell?
(iii) Draw a simple circuit including the photocell to show the direction of flow of current.
(iv) Calculate the photon energy in ultraviolet radiation whose frequency is 8.60 x 1014 HZ. (Plank’s constant, h=6.63 x 10-34J).