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Physics · 2017
JEE Main 2017 · 2017-04-02 Offline · Q11
The temperature of an open room of volume 30 m^3 increases from 17°C to 27°C due to the sunshine. The atmospheric pressure in the room remains 1 ×…
The temperature of an open room of volume $\displaystyle 30 \mathrm{~m}^3$ increases from $\displaystyle 17$°C to $\displaystyle 27$°C due to the sunshine. The atmospheric pressure in the room remains $\displaystyle 1 \times 10^5 \mathrm{~Pa}$. If $\displaystyle \mathrm{n}_i$ and $\displaystyle \mathrm{n}_f$ are the number of molecules in the room before and after heating, then $\displaystyle \mathrm{n}_f-\mathrm{n}_i$ will be :
Official answer
(4)
$\displaystyle -2.5 \times 10^{25}$
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JEE Main 2017 Physics question, with the answer from NTA’s final answer key. Where our answers come from.