Suppose the specific heat (S) of a substance is found to vary with temperature to the equation S = a+ bt2, where a and b are constants and t the temperature scale. Then the difference between the mean sp. heat of a substance in a ter range t = 0 to t = t and specific heat at the mid-point t/2 is : %3D

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.