Physics - Heat & Thermo Question with Solution | TestHub

$10$ J of heat is supplied to a gas enclosed in a cylindrical vessel in open atmosphere, closed by a smooth piston of cross-sectional area $4\times 10^{-4}$ $m^2$. The piston moves out by $10$ cm. Find the amount by which the internal energy of the gas increases. Atmospheric pressure is $10^5$ Pa.