CBSE 2023 · Region 2 · Set 3 · Q2 · 1 mark
The energy of a photon of wavelength $\displaystyle 663$ nm is
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle 3.0 \times 10^{-19} \mathrm{~J}$
Dual Nature of Radiation and MatterParticle Nature of Light: The PhotonApplymcqeasy
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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.