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Plot a graph showing the variation of stopping potential with the frequency of incident radiation for two different photosensitive materials having work functions W_(1) and W_(2)(W_(1) gt W_(2)). On what factors does the (i) slope and (ii) intercept of the lines depend ? |
Answer» Solution : A graph showing the variation of stopping potential `V_(0)` with the frequency v of incident radiation for two different photosensitive materials having work functions `W_(1) and W_(2)(W_(1) gtW_(2))` have been shown. the graphs are straight lines as shown. (i) Slope of the `V_(0)-v` lines is same both materials and has a VALUE `H/e`, where h=Planck.s CONSTANT and e=electron charge. (II) Intercept of `V_(0)-v` line along v-axis depends on the work function or the threshold frequency `v_(0)` of the photosensitive materials where `v_(0)=(W)/(h)`. |
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