Quantum Mechanics [CSIR (Council of Scientific & Industrial Research) Physical Sciences]: Questions 30 - 34 of 116

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Question 30

Appeared in Year: 2011

Question MCQ▾

The energy of the first excited quantum state of a particle in the two dimensional potential is – (December)

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 31

Appeared in Year: 2014

Question MCQ▾

Let (where and are constants with ) be a linear combination of the wavefunction of the ground and first excited states of the one – dimensional harmonic oscillator. For what value of is the expectation value a maximum? (December)

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 32

Appeared in Year: 2014

Question MCQ▾

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)

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 33

Appeared in Year: 2011

Question MCQ▾

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)

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 34

Appeared in Year: 2014

Question MCQ▾

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

Choices

Choice (4)Response

a.

b.

c.

d.

Edit