Condensed Matter Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 4  6 of 19
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Question number: 4
» Condensed Matter Physics » Superfluidity
Appeared in Year: 2014
Question
The following data is obtained in an experiment that measures the viscosity as a function of molecular weight M for a set of polymers.










The relation that best describes the dependence of on M is – (June – 2014)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 5
» Condensed Matter Physics » Drude Model of Electrical and Thermal Conductivity
Appeared in Year: 2013
Question
Using the frequency dependent Drude formula, what is the effective kinetic inductance of a metallic wire that is to be used as a transmission line? [In the following, the electron mass is , density of electrons is , and the length and cross – sectional area of the wire are and A respectively. ] (June)
Choices
Choice (4)  Response  

a. 


b.  Zero 

c. 


d. 


Question number: 6
» Condensed Matter Physics » Bonding of Solids
Appeared in Year: 2014
Question
The van der Waals’ equation of state for a gas is given by, Where P, V and T represent the pressure, volume and temperature respectively, and and are constant parameters. At the critical point, where all the roots of the above cubic equation are degenerate, the volume is given by, (June – 2014)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

