Thermodynamic and Statistical Physics-Laws of Thermodynamics (CSIR Physical Sciences): Questions 4 - 6 of 6

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Question number: 4

» Thermodynamic and Statistical Physics » Laws of Thermodynamics

Appeared in Year: 2014

MCQ▾

Question

For a particular thermodynamic system the entropy S is related to the internal energy U and volume V by S=cU34V14 ; where c is a constant. The Gibbs potential G=UTS+pV for this system is – (June)

Choices

Choice (4) Response
a.

US4V

b.

3pU4T

c.

Zero

d.

cU3

Question number: 5

» Thermodynamic and Statistical Physics » Laws of Thermodynamics

Appeared in Year: 2011

MCQ▾

Question

The internal energy E of a system is given by E=bS3VN , where b is a constant and other symbols have their usual meaning. The temperature of this system is equal to – (December)

Choices

Choice (4) Response
a.

3bS2VN

b.

bS3V3N

c.

bS2VN

d.

(SN)2

Question number: 6

» Thermodynamic and Statistical Physics » Laws of Thermodynamics

Appeared in Year: 2012

MCQ▾

Question

A given quantity of gas is taken from the state AC reversibly, by two paths, AC directly and ABC as shown in the figure below.

PV diagram of cycle ABC

PV Diagram of Cycle ABC

In PV diagram of ABC cycle is shown.

During the process AC the work done by the gas is 100 J and the heat absorbed is 150J . If during the process ABC the work done by the gas is 30J , the heat absorbed is – (December)

Choices

Choice (4) Response
a.

20J

b.

280J

c.

220J

d.

80J

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