Embibe Experts Solutions for Chapter: Thermodynamics, Exercise 1: AP EAPCET 2019 (21-Apr Shift-2)

A system is taken from state$-A$ to state$-B$ along two different paths. The heat absorbed and work done by the system along these two paths are $Q_1,Q_2$ and $W_1,W_2$ respectively, then

A gas $(\gamma =1.5)$ is suddenly compressed to $(1/4{)}^{th}$ its initial volume. Then find the ratio of its final to initial pressure.

Isothermal process has non-linear graph between:

An ideal gas is taken from state-$1$ to state-$2$ through optional path $A, B, C$ and $D$ as shown in the $P-V$ diagram. Let $Q, W$ and $U$ represent the heat supplied, work done and change internal energy respectively, then

Which one of the graphs below best illustrates the relationship between internal energy $U$ of an ideal gas and temperature $T$ of the gas in $K$?

For a monoatomic ideal gas following the cyclic process $ABCA$ shown in the $U$ vs $\rho$ plot, identify the incorrect option:

A refrigerator with coefficient of performance $0.25$ releases $250 \mathrm{J}$ of heat to a hot reservoir. The work done on the working substance is

A Carnot engine whose heat sink is at $27°\mathrm{C}$ has an efficieny of $40\%$. By how much should its source temperature be changed so as to increase its efficiency to $60\%$?