Physics · 2023
JEE Main · 29 January 2023, Shift 1 · Q16
A person observes two moving trains, 'A' reaching the station and 'B' leaving the station with equal speed of 30 m / s. If both trains emit sounds…
A person observes two moving trains, 'A' reaching the station and 'B' leaving the station with equal speed of $\displaystyle 30 \mathrm{~m} / \mathrm{s}$. If both trains emit sounds with frequency $\displaystyle 300$ Hz , (Speed of sound: $\displaystyle 330 \mathrm{~m} / \mathrm{s}$ ) approximate difference of frequencies heard by the person will be:
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle 55$ Hz
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.