Sketch the graphs showing variation of stopping potential with frequency of incident radiations for two photosensitive materials A and B having threshold frequencies .
(i) In which case is the stopping potential more and why?

(ii) Does the slope of the graph depend on the nature of the material used? Explain.

Question

Sketch the graphs showing variation of stopping potential with frequency of incident radiations for two photosensitive materials A and B having threshold frequencies .
(i) In which case is the stopping potential more and why?

(ii) Does the slope of the graph depend on the nature of the material used? Explain.

Philoid · Accepted Answer

(i) The stopping potential has a linear relation with the frequency of incident radiation. It increases linearly with the increase in frequency of incident radiation . Therefore, the stopping potential of metal A is more than that of metal B .ν_B

(ii)

(ii) No, the slope of the graph does not depend on the nature of the material used. Since, the slope of the graph tells us the value of h/e which is constant for both the materials.