Question

Two thermally insulated chambers are as shown in figure. Mark out the correct option regarding these

• A. In Fig.1 thermal equilibrium of $A,B$ and $C$ can be achieved, and hence final temperature of $A,B$ and $C$ are the same.
• B. In Fig.2, thermal equilibrium of $A,B$ and $C$ would be achieved
• C. Both (1) and (2) are right
• D. (2) is right but (1) is wrong

Answer 1

The correct option is A In Fig.1 thermal equilibrium of $A,B$ and $C$ can be achieved, and hence final temperature of $A,B$ and $C$ are the same.

$Given:$ we know that heat can be exchanged through conducting medium and heat cannot be exchanged through insulating medium.

$Solution:$

$---------seefigure1----------------$

• the temperature of A = temperature of C (there is a conducting slab between A and B)
• the temperature of B = temperature of C (there is a conducting slab between B and C)
  

so ultimately temperature of A becomes equal to temperature B

$----------seefigure2-----------------$

• here temperature of A = temperature of B$\ne$ temperature of C

(as there is an insulating medium attached to C from both sides of A and B) so here thermal equilibrium can't be established in fig. 2.

So, the correct OPTION is A