Objects A and B that are initially separated from each other and … - Vidyadip

MCQ

Objects $A$ and $B$ that are initially separated from each other and well isolated from their surroundings are then brought into thermal contact. Initially $T_A= 0^oC$ and $T_B = 100^oC$. The specific heat of $A$ is less than the specific heat of $B$. After some time, the system comes to an equilibrium state. The final temperatures are :

✓
$T_A= T_B > 50^°C$
B
$T_A> T_B > 50^°C$
C
$T_A= T_B < 50^°C$
D
$T_B > T_A> 50^°C$

✓

Answer

Correct option: A.

$T_A= T_B > 50^°C$

a
At equlibrium temp. of both objects are same Heat loss $+$ heat gain $= 00$
$M_BC_B (T -100) + M_AC_A (T -0) = 0$

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