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The graph shows variation of stopping potential V0 versus frequency of incident radiation ν for two photosensitive metals A and B. Which of the two metals has higher threshold frequency and why? |
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Answer» Metal A has higher threshold frequency, We know that for a given photosensitive material, The stopping potential varies linearly with the frequency of the incident radiation. Also, Work function, φ0 = hv0 Also, φ0 = e × magnitude of intercept on potential axis. Here for metal A, y – intercept is more negative for metal A. |
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