Water of mass m gram is slowly heated to increase the temperature from T1 to T2. The change in entropy of the water, given specific heat of water is 1 Jkg–1K–1, is :
1
zero
2
m (T2–T1)
3
\(\mathrm{m} \ln \left(\frac{\mathrm{~T}_{1}}{\mathrm{~T}_{2}}\right)\)
4
\(\mathrm{m} \ln \left(\frac{\mathrm{~T}_{2}}{\mathrm{~T}_{1}}\right)\)