CBSE 2025 · Region 6 · Set 1 · Q10 · 1 mark
The work function of a material is $\displaystyle 2 \cdot 21 \mathrm{eV}$. Which of the following cannot produce photoelectrons from it?
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Red light
Dual Nature of Radiation and MatterEinstein’s Photoelectric Equation: Energy Quantum of RadiationApplymcqeasy
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CBSE Class 12 Physics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.