1
IAT (IISER) 2024
MCQ (Single Correct Answer)
+4
-1

Two monochromatic sources emit light at wavelengths $\lambda$ and $\lambda / 2$. The stopping potentials for a photosensitive material using these two sources are found to be 1 V and 3 V , respectively. What is the work function of the material?

A
1 eV
B
1.25 eV
C
1.5 eV
D
2 eV
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