For three low density gases $A, B, C$ pressure versus temperature graphs are plotted while keeping them at constant volume, as shown in the figure.
The temperature corresponding to the point ' $K$ ' is $...........\,{}^{\circ}\,C$
A$-273$
B$-100$
C$-373$
D$-40$
JEE MAIN 2023, Medium
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A$-273$
a For isochoric process
$\frac{ P }{ T }= n \frac{ R }{ V }= constan t$
$P =\frac{ nR }{ V }( t +273)$
If $P =0 \Rightarrow t =-273^{\circ}\,C$
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