Thermodynamic and Statistical PhysicsIsing Model (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1  3 of 3
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Question number: 1
» 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: 2
» Thermodynamic and Statistical Physics » Ising Model
Appeared in Year: 2012
Question
Consider a one – dimensional Ising model with N spins, at very low temperature when almost all the spins are aligned parallel to each other. There will be a few spin flips with each flip costing an energy . In a configuration with spin flips, the energy of the system is and the number of configuration is ; varies from 0 to N. The partition function is – (December)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 3
» Thermodynamic and Statistical Physics » Ising Model
Appeared in Year: 2011
Question
A one – dimensional chain consists of a set of N rods each of length . When stretched by a load, each rod can align either parallel or perpendicular to the length of the chain. The energy of a rod is when aligned parallel to the length of the chain and is when perpendicular to it. When the chain is in thermal equilibrium at temperature T, its average length is – (December)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
