試題詳解

51. Two objects with temperatures T1 and T2 (T2 = 2T1) are isolated from their surroundings. A small amount of heat Q is transferred without changing their temperatures. What is the total entropy change of the two objects?
(A) (1/2)·(Q/T1)
(B) (3/2)·(Q/T1)
(C) (1/3)·(Q/T2)
(D) (2/3)·(Q/T2)
(E) (1/4)·(Q/T2)