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Plot a graph showing the variation of stopping potential with the frequency of incident radiation for two different photosensitive having work functions W_1 and 1_2(W__1 gt W_2) . On what factors does the (i) slope and (ii) intercept of the lines depend ? |
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Answer» Solution :The graph showing the variation of stopping POTENTIAL `(V_0)` with the frequency of incident radiation `(v_0) ` for TWO different photosensitive materials having work functions `W_1`and `W_2(W_1gt W_2)` is shown in FIG. (i) Slope of the line `=(Delta V)/(Deltav)=(h)/(e)`. `therefore ` Slope of the line depends on the Plank's constant h and the electronic CHARGE e. (ii) Intercept of graph A on the potential axis ` =("Work function (W))/("e")=-(hv_0)/(e)`. `therefore` Intercept of the line depends upon Planck's constant h, threshold frequency `(V_0)` and the electronic charge (e). 
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