Physics · 2019
JEE Main · 9 April 2019, Shift 1 · Q14
The pressure wave, P =0.01 sin [1000 t -3 x] Nm^-2, corresponds to the sound produced by a vibrating blade on a day when atmospheric temperature is…
The pressure wave, $\displaystyle \mathrm{P}=0.01 \sin [1000 \mathrm{t}-3 x] \mathrm{Nm}^{-2}$, corresponds to the sound produced by a vibrating blade on a day when atmospheric temperature is $\displaystyle 0$°C. On some other day when temperature is T, the speed of sound produced by the same blade and at the same frequency is found to be $\displaystyle 336 \mathrm{~ms}^{-1}$. Approximate value of T is :
Official answer
(4)
$\displaystyle 4$°C
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.