Two blocks of the same metal having same mass and at temperature \( T_{1} \) and \( T_{2} \) res....
0Two blocks of the same metal having same mass and at temperature \( T_{1} \) and \( T_{2} \) respectively, are
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brought in contact with each other and allowed to attain thermal equilibrium at constant pressure. The change in entropy, \( \Delta S \), for this constant pressure.
(1) \( 2 C_{p} \ln \left[\frac{\left(T_{1}+T_{2}\right)^{1 / 2}}{T_{1} T_{2}}\right] \)
(2) \( 2 \mathrm{C}_{\mathrm{p}} \ln \left[\frac{\mathrm{T}_{1}+\mathrm{T}_{2}}{4 \mathrm{~T}_{1} \mathrm{~T}_{2}}\right] \)
(3) \( C_{p} \ln \left[\frac{\left(T_{1}+T_{2}\right)^{2}}{4 T_{1} T_{2}}\right] \)
(4) \( 2 \mathrm{C}_{\mathrm{p}} \ln \left[\frac{\mathrm{T}_{1}+\mathrm{T}_{2}}{2 \mathrm{~T}_{1} \mathrm{~T}_{2}}\right] \)
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