CBSE 2026 · Region 5 · Set 2 · Q2 · 1 mark
The momentum of a photon associated with a microwave of wavelength $\displaystyle 4 \cdot 00 \mathrm{~cm}$ is :
Official answer
From CBSE’s own marking scheme for this paper.
(A)
$\displaystyle 1.66 \times 10^{-32} \mathrm{~kg} \mathrm{~ms}^{-1}$
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CBSE Class 12 Physics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.