Question

A system works under cyclic process as follows

Heat absorbed during the process is:

• A. $\frac{22}{7}\times {10}^{2}J$
• B. $\frac{22}{7}\times {10}^{3}J$
• C. $\frac{22}{7}\times {10}^{4}J$
• D. $\frac{22}{7}\times {10}^{5}J$

Answer 1

The correct option is A $\frac{22}{7}\times {10}^{2}J$

For cyclic process, $du=0$
as, $q=-ve$
$\therefore$ work is done by the system
$\therefore q=-w=areaoccupiedbycircle$
$=\pi r^2=\frac{22}{7}\times {10}^2$
$\text{Radius}=10$ (as can be seen from graph)