AIEEE 2005 | Heat and Thermodynamics Question 375 | Physics

The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is AIEEE 2005 Physics - Heat and Thermodynamics Question 352 English

AIEEE 2005 Physics - Heat and Thermodynamics Question 352 English

$${1 \over 4}$$

$${1 \over 2}$$

$${2 \over 3}$$

$${1 \over 3}$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

The figure shows a system of two concentric spheres of radii $${r_1}$$ and $${r_2}$$ are kept at temperatures $${T_1}$$ and $${T_2}$$, respectively. The radial rate of flow of heat in a substance between the two concentric spheres is proportional to AIEEE 2005 Physics - Heat and Thermodynamics Question 354 English

AIEEE 2005 Physics - Heat and Thermodynamics Question 354 English

$$In\left( {{{{r_2}} \over {{r_1}}}} \right)$$

$${{\left( {{r_2} - {r_1}} \right)} \over {\left( {{r_1}{r_2}} \right)}}$$

$${\left( {{r_2} - {r_1}} \right)}$$

$${{{r_1}{r_2}} \over {\left( {{r_2} - {r_1}} \right)}}$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

A system goes from $$A$$ to $$B$$ via two processes $$I$$ and $$II$$ as shown in figure. If $$\Delta {U_1}$$ and $$\Delta {U_2}$$ are the changes in internal energies in the processes $$I$$ and $$II$$ respectively, then AIEEE 2005 Physics - Heat and Thermodynamics Question 353 English