Physics · 2023
JEE Main · 8 April 2023, Shift 1 · Q31
The engine of a train moving with speed 10 ms^-1 towards a platform sounds a whistle at frequency 400 Hz. The frequency heard by a passenger inside…
The engine of a train moving with speed $\displaystyle 10 \mathrm{~ms}^{-1}$ towards a platform sounds a whistle at frequency $\displaystyle 400$ Hz . The frequency heard by a passenger inside the train is: (neglect air speed. Speed of sound in air $\displaystyle =330 \mathrm{~ms}^{-1}$ )
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 400$ Hz
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.