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Physics · 2023 · 1 mark
CBSE 2023 · Region 2 · Set 3 · Q2
The energy of a photon of wavelength 663 nm is
The energy of a photon of wavelength $\displaystyle 663$ nm is
Official answer
(C)
$\displaystyle 3.0 \times 10^{-19} \mathrm{~J}$
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