GATE (Graduate Aptitude Test in Engineering) Physics: Questions 145  148 of 659
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Question number: 145
» Nuclear and Particle Physics » Nuclear Binding Energy
Appeared in Year: 2012
Question
Total binding energies of are , and , respectively. The energy gap between and neutron shells for the nuclei whose mass number is close to 16, is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 146
» Quantum Mechanics » TimeIndependent Perturbation Theory
Appeared in Year: 2012
Question
Consider a system in the unperturbed state described by the Hamiltonian, . The system is subjected to a perturbation of the form where . The energy eigenvalues of the perturbed system using the first order perturbation approximation are –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 147
» Thermodynamics and Statistical Physics » Classical and Aquantum Statistics
Appeared in Year: 2012
Question
Which one of the following cannot be explained by considering a harmonic approximation for the lattice vibrations in solids?
Choices
Choice (4)  Response  

a.  Thermal expansion 

b.  Optical branches in lattices 

c.  Debye’s law 

d.  Dulong – Petit law 

Question number: 148
» Electronics » Semiconductor Devices
Appeared in Year: 2012
Question
A Ge semiconductor is doped with acceptor impurity concentration of . For the given hole mobility of the resistivity of this material is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

