Question

$50Ltr$. of a certain liquid is confined in a piston system at the external pressure $100atm$. This pressure is suddenly released and liquid is expanded against the constant atmospheric pressure, volume of the liquid increases by $1Ltr$. and the final pressure of the liquid is $10atm$. Find the workdone.

• A. $1L.atm$
• B. $5L.atm$
• C. $500L.atm$
• D. $50L.atm$

Answer 1

The correct option is A $1L.atm$

The external pressure is $100atm$

Change in volume$=51-50=1L$

Work done for constant pressure $=P\left(delta\right)V$

$100\ast 1=100J$

$1Latm=100J$

Hence the answer $1Latm$ or $100J$