Question

For two different photosensitive materials having work function and 2 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

• A. 1:1
• B. 1:2
• C. 1:4
• D. 4:1

Answer 1

Answer: (A)

1:1

Answer 2

The correct option is (A): 1:1
$eV=hv−\phi$
V = ((\frac{h}{e}))ν−\phi$$$ Slope = (\frac{h}{e})$ is independent of material
Therefore, the ratio is 1:1.