CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 269  271 of 463
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Question number: 269
» 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: 270
» Quantum Mechanics » WaveFunction in Momentum Representations
Appeared in Year: 2013
Question
If denotes the eigenfunction of the Hamiltonian with a potential , then the expectation value of the operator and in the state is – (June – 2013)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 271
» 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. 

