CBSE 2023 · Region 3 · Set 1 · Q11 · 1 mark
Light of frequency $\displaystyle 6.4 \times 10^{14} \mathrm{~Hz}$ is incident on a metal of work function $\displaystyle 2 \cdot 14 \mathrm{eV}$. The maximum kinetic energy of the emitted electrons is about :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
0.$\displaystyle 51$ eV
Dual Nature of Radiation and MatterEinstein’s Photoelectric Equation: Energy Quantum of RadiationApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.