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CGP EDU Academic Team
Published on: September 12, 2026
The volume of an ideal gas is 1 liter and its pressure is equal to 72cm of mercury column. The volume of gas is made 900 cm 3 by compressing it isothermally. The stress of the gas will be
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A
For isothermal process $P_1 V_1 = P_2 V_2$
$\Rightarrow P_2 = \frac{P_1 V_1}{V_2} = \frac{72 \times 1000}{900} = 80 \text{ cm Hg}$
Stress $\Delta P = P_2 - P_1 = 80 - 72 = 8 \mathrm{cm}$
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