Thermodynamic and Statistical Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 23  26 of 64
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Question number: 23
» Thermodynamic and Statistical Physics » Free Energy
Appeared in Year: 2011
Question
If the number density of a free electron gas in three electron gas in three dimensions is increase eight times, its Fermi temperature will –
(December)
Choices
Choice (4)  Response  

a.  Increase by a factor of 4 

b.  Decrease by a factor of 8 

c.  Increase by a factor of 8 

d.  Decrease by a factor of 4 

Question number: 24
» Thermodynamic and Statistical Physics » Laws of Thermodynamics
Appeared in Year: 2011
Question
The internal energy E of a system is given by, 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. 


b. 


c. 


d. 


Question number: 25
» Thermodynamic and Statistical Physics » Phase Equilibria
Appeared in Year: 2011
Question
A particle is confined to the region by a potential which increases linearly as . The mean position of the particle at temperature T is – (June)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 26
» Thermodynamic and Statistical Physics » Random Walk
Appeared in Year: 2014
Question
A random walker takes a step of unit length in the positive direction with probability and a step of unit length in the negative direction with probability. The mean displacement of the walker after n steps is – (December)
Choices
Choice (4)  Response  

a.  0 

b. 


c. 


d. 

