Thermodynamics Question 20
Question 20 - 01 February - Shift 2
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:
(1) $-273^{\circ} C$
(2) $-100^{\circ} C$
(3) $-373^{\circ} C$
(4) $-40^{\circ} C$
Show Answer
Answer: (1)
Solution:
Formula: Isochoric process
For isochoric process
$\frac{P}{T}=n \frac{R}{V}=$ cons tan $t$
$P=\frac{nR}{V}(t+273)$
If $P=0 \Rightarrow t=-273^{\circ} C$
