For two different photosensitive materials having work function φ and… | MHT CET 2025 (23 Apr, Shift 1)

Q22MHT CET 2025 · 23 APR · SHIFT 1Medium

Photoelectric Experiment: Intensity, Stopping Potential & Graphs

For two different photosensitive materials having work function $\phi$ and $2\phi$ respectively, are illuminated with light of sufficient energy to emit electrons. If the graph of stopping potential versus frequency is drawn, for these two different photosensitive materials, the ratio of slope of graph for these two materials is

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Answer: (a)

$V_0 = \frac{h}{e}\nu - \frac{\phi}{e}$ ; slope $= h/e$ for any material.
Work function changes only the intercept.
So the answer is (a) $1 : 1$ .

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Photoelectric Experiment: Intensity, Stopping Potential & Graphs question from MHT CET 2025 (23 Apr, Shift 1)

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