CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 270  272 of 463
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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. 


Question number: 272
» Nuclear and Particle Physics » Mesons
Appeared in Year: 2013
Question
Muons are produced through the annihilation of particle and its antiparticle, namely the process, A muon has a rest mass of and its proper life time is . If the center of mass energy of the collision is in the laboratory frame that coincides with the center – of – mass frame, then the fraction of muons that will decay before they reach a detector placed 6 km away from the interaction point is – (June)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

