A P-T graph is shown for a cyclic process. Select correct statement regarding this:-

(1) During process CD, work done by gas is negative.

(2) During process AB, work done by the gas is positive.

(3) During process BC internal energy of system increases.

(4) During process BC internal energy of the system decreases

Asked by patra04011965 | 19th Mar, 2019, 03:27: PM

Expert Answer:

Option B and Option c is correct because temperature temperature at C is greater than B and change in internal energy  is directly proportional to change in temperature and in this case this change is positive so the internal energy of the system will increase. 

Answered by Ankit K | 19th Mar, 2019, 10:16: PM

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