CBSE 2023 · Region 2 · Set 2 · Q12 · 1 mark
A photon of wavelength $\displaystyle 663$ nm is incident on a metal surface. The work function of the metal is $\displaystyle 1.50$ eV . The maximum kinetic energy of the emitted photo electrons is
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle 6.0 \times 10^{-20} \mathrm{~J}$
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.