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 Form 4 Physics Photoelectric Effect Questions and Answers

Fig. 4 shows a photocell.
figphotoelectric3620201508.JPG
(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 #10^14# HZ. (Plank’s constant, h=6.63 x #10^-34#J).

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