Carnot Cycle

Q. on an isothermal process, there are two points A and B at which pressures and volumes are (2P, V) and (P, 2V) respectively.If A and B are connected by a straight line , fimd the pressure at a point on this straight line at which temperature is maximum.

Q. 160j of work is done on the system and at the same time 100j of heat is given out.what is the change in the internal energy

Q. A carnot engine operating between temperature $T_1$ and $T_2$ has the efficiency of $\frac{1}{6}$. When the temperature $T_2$ is lowered by 62K, it efficiency becomes $\frac{1}{3}$, Then temperature $T_1$ and $T_2$ respectively are

1. $T_1=370K,T_2=330K$
2. $T_1=330K,T_2=268K$
3. $T_1=310K,T_2=248K$
4. $T_1=372K,T_2=310K$

Q. Difference between Free Expansion of a Gas and Isothermal Expansion

Q. for an adiabetic expansion of an ideal gas the fractional change in its pressure is equal to -gamma x dv+v. prove.

Q. A monoatomic gas at pressure P having a volume V expands isothermally to a volume 2V and then adiabatically to volume 16 V the final pressure of gas is (take Y=5/3)

Q. If a refrigerator's door is opened, then we get

1. Room heated
2. Room cooled
3. More amount of heat is passed out
4. No effect on room

Q. When the amount of work done is 333 Cal and the change in internal energy is 167 cal what is the amount of heat supplied ?