… of water at … is converted into steam at … by boiling at atmospheric pressure. The volume of water changes from … as a liquid to … as steam. The change in internal energy of the system during the process will be (Given latent heat of vaporisaiton …, Atmospheric pressure = …

Option A. To find the change in internal energy, we need to consider both the heat added during the process and the work done during the process.

Heat and Thermodynamics

JEE Main 2023 · 11 Apr, Morning shift · Q7536

PhysicsHard251×since 2002Q7536

1 \mathrm{~kg}

of water at

100^{\circ} \mathrm{C}

is converted into steam at

100^{\circ} \mathrm{C}

by boiling at atmospheric pressure. The volume of water changes from

1.00 \times 10^{-3} \mathrm{~m}^{3}

as a liquid to

1.671 \mathrm{~m}^{3}

as steam. The change in internal energy of the system during the process will be (Given latent heat of vaporisaiton

=2257 \mathrm{~kJ} / \mathrm{kg}

, Atmospheric pressure =

\left.1 \times 10^{5} \mathrm{~Pa}\right)

Heat and Thermodynamics — JEE Main 2023 · 11 Apr, Morning shift · Q7536 · Alror