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STD 11 - 10.2 , transmission of heat — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 10.2 , transmission of heat4 Marks
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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