First slide

Different type of processes

Question

An ideal monoatomic gas undergoes the process AB as shown in the figure. If the heat supplied and the work done in the process are $Δ$ Q and $Δ$ W, respectively.
The ratio $Δ$ Q : $Δ$ W is

Easy

A

2.50
B

1.67
C

1.25
D

0.40

Solution

V-T graph is a straight line passing through origin
or $V \propto T$
Hence, the given process is isobaric.
$\frac{Δ Q}{Δ W} = \frac{n C_{p} Δ T}{n R Δ T} = \frac{C_{p}}{R} = \frac{5}{2} = 2.5$

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