Nature of change in entropy of the universe due to heat transfer - Thermodynamics

Q.  When heat is transferred from body A which is at temperature T1 to body B which at temperature T2 and there is no heat loss to the surrounding, what will be the change in entropy (dS) of the universe? (Given T1 > T2)
- Published on 20 Aug 15

a. dS will remain constant
b. dS will be positive
c. dS will be negative
d. dS will either positive or negative

ANSWER: dS will be positive

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