Quantum MechanicsTimeindependent Perturbation Theory and Applications (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 7  8 of 8
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Question number: 7
» Quantum Mechanics » Timeindependent Perturbation Theory and Applications
Appeared in Year: 2011
Question
A constant perturbation as shown in the figure below acts on a particle of mass confined in an infinite potential well between 0 and L.
The first – order correction to the ground state energy of the particle is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 8
» Quantum Mechanics » Timeindependent Perturbation Theory and Applications
Appeared in Year: 2012
Question
Consider an electron in a box of length L with periodic boundary condition . If the electron is in the with energy , what is the correction to its energy, to second order of perturbation theory, when it is subjected to weak periodic potential , where is an integral multiple of the ? (June)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

