Atomic & Molecular Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 11 - 14 of 19

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Question number: 11

» Atomic & Molecular Physics » Diatomic Molecules » Vibrational

Appeared in Year: 2012

MCQ▾

Question

A system has two normal modes of vibration, with frequencies and . What is the probability that at temperature T, the system has an energy less than ?

[In the following and Z is the partition function of the system]

(June)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 12

» Atomic & Molecular Physics » LS & JJ Couplings

Appeared in Year: 2012

MCQ▾

Question

The spectral line corresponding to an atomic transition from states splits in a magnetic field of 1 KG into three components separated by . If the zero field spectral line corresponding to , what is the g – factor corresponding to the state? (You may use ) (June)

Choices

Choice (4) Response

a.

b.

c.

2

d.

1

Question number: 13

» Atomic & Molecular Physics » LS & JJ Couplings

Appeared in Year: 2011

MCQ▾

Question

If the hyperfine interaction in an atom is given by , where and denote the electron and proton spins, respectively, the splitting between the and state is – (December)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 14

» Atomic & Molecular Physics » Relativistic Corrections for Energy Levels of Hydrogen Atom

Appeared in Year: 2011

MCQ▾

Question

The ratio of intensities of the and lines of sodium at high temperature – (December)

Choices

Choice (4) Response

a.

b.

c.

d.

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