Thermodynamic and Statistical Physics (CSIR Physical Sciences): Questions 34  37 of 56
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Question number: 34
» Thermodynamic and Statistical Physics » Ising Model
Appeared in Year: 2013
Question
Consider a system of two Ising spins and taking values with interaction energy given by , when it is in thermal equilibrium at temperature T. For large T, the average energy of the system varies as , with C given by,
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 35
» Thermodynamic and Statistical Physics » BoseEinstein Condensation
Appeared in Year: 2014
Question
The recently discovered Higgs boson at the LHC experiment has a decay mode into a photon and a Z boson. If the rest masses of the Higgs and Z boson are and respectively, and the decaying Higgs particle is at rest, the energy of photon will approximately be – (June – 2014)
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 36
» Thermodynamic and Statistical Physics » Planck's Distribution Law
Appeared in Year: 2013
Question
Let be a random variable uniformly distributed in the interval and , where is a real constant. If V is to be exponentially distributed in the interval with unit standard deviation, then the value of should be – (June)
Choices
Choice (4)  Response  

a. 


b.  1 

c.  1 

d. 


Question number: 37
» Thermodynamic and Statistical Physics » Fermi Gases
Appeared in Year: 2014
Question
The pressure of a nonrelativistic free Fermi gas in three – dimension depends, at , on the density of fermions as. (June – 2014)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

