Question 954: Thermodynamics & KTG

Question

Figure below shows two paths that may be taken by a gas to go from a state A to a state C.
In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the process AC will be
![](https://neetcare-image.cdn.examgoal.net/1qpq2yck7l5txc2/697bc4c4-11ac-471a-bf7d-6f669072bddf/9b77fe20-6266-11ea-bddc-5f310cab17d0/file-1qpq2yck7l5txc3-454w.jpg)

Accepted Answer

Considering the cyclic process ABCA
Q
cyclic
= W = area of $\Delta $ABC
${Q_{AB}} + {Q_{BC}} + {Q_{CA}} = {1 \over 2} 	imes BC 	imes AB$
$400 + 100 + {Q_{CA}} = {1 \over 2} 	imes \left( {2 	imes {{10}^{ - 3}}} ight) 	imes 4 	imes {10^4}$
$400 + 100 - {Q_{AC}} = 40$
Hence, Q
AC
= 460 J
![](https://neetcare-image.cdn.examgoal.net/1qpq2yck7l5txc2/697bc4c4-11ac-471a-bf7d-6f669072bddf/9b77fe20-6266-11ea-bddc-5f310cab17d0/file-1qpq2yck7l5txc3-454w.jpg)

Answer

460 J

Answer

300 J

Answer

380 J

Answer

500 J

Thermodynamics & KTG

Figure below shows two paths that may be taken by a gas to go from a state A to a state C. In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the process AC will be

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