Quantum Mechanics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 32 - 35 of 80

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Question number: 32

» Quantum Mechanics » Spin-Statistics Connection

Appeared in Year: 2014

MCQ▾

Question

A collection N of non – interacting spins , is kept in an external magnetic field B at a temperature T. The Hamiltonian of the system is . What should be the minimum value of for which the mean value? (December)

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Question number: 33

» Quantum Mechanics » Variational Method

Appeared in Year: 2011

MCQ▾

Question

If the perturbation, where is a constant; is added to the infinite square well potential

The first order correction to ground state energy is: - (June)

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Question number: 34

» Quantum Mechanics » WKB Approximation

Appeared in Year: 2014

MCQ▾

Question

Consider a particle of mass m in the potential . The energy eigenvalues, in the WKB approximation, are – (December)

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Question number: 35

» Quantum Mechanics » Spin-Statistics Connection

Appeared in Year: 2011

MCQ▾

Question

The Hamiltonian of an electron in a constant magnetic field is given by where is a positive constant and denotes the Pauli matrices. Let and be the unit matrix. Then the operator simplifies to – (June)

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