Thermodynamic and Statistical PhysicsClassical and Quantum Statistics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1  4 of 5
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Question number: 1
» Thermodynamic and Statistical Physics » Classical and Quantum Statistics
Appeared in Year: 2013
Question
For temperature T_{1} > T_{2}, the qualitative temperature dependence of the probability distribution of the speed of molecule in three dimensions is correctly represented by the following figure: (June)
Choices
Choice (4)  Response  

a.  
b.  
c.  
d. 
Question number: 2
» Thermodynamic and Statistical Physics » Classical and Quantum Statistics
Appeared in Year: 2014
Question
Let ; where and are independent and identically distributed Gaussian random variables of mean and standard deviation . Then is – (June)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c.  1  
d. 

Question number: 3
» Thermodynamic and Statistical Physics » Classical and Quantum Statistics
Appeared in Year: 2011
Question
Consider a system of N non – interacting spins, each of which has classical magnetic moment of magnitude . The Hamiltonian of this system in an external magnetic field is
where is the magnetic moment of the spin. The magnetization per spin at temperature T is: (June)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 4
» Thermodynamic and Statistical Physics » Classical and Quantum Statistics
Appeared in Year: 2012
Question
The dispersion relation of phonons in a solid is given by . The velocity of the phonons at large wavelength is, (June)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
