Physics · 2023
JEE Main · 30 January 2023, Shift 1 · Q15
A small object at rest, absorbs a light pulse of power 20 mW and duration 300 ns. Assuming speed of light as 3 × 10^8 m / s, the momentum of the…
A small object at rest, absorbs a light pulse of power $\displaystyle 20$ mW and duration $\displaystyle 300$ ns . Assuming speed of light as $\displaystyle 3 \times 10^8 \mathrm{~m} / \mathrm{s}$, the momentum of the object becomes equal to :
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 2 \times 10^{-17} \mathrm{~kg} \mathrm{~m} / \mathrm{s}$
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.