K.C.S.E Physics Q & A - MODEL 1995PP1QN29&30
In an experiment on photo- electricity using metal X, the graph shown in figure 9 was obtained. Use the graph to answer questions 29 and 30.
(a)Determine the minimum frequency f0 below which no photoelectric emission occurs
(b) Sketch on the same axes, a graph for a metal, Y hose work function is higher than metal X
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