Atomic & Molecular Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 10 - 12 of 19

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Question number: 10

» Atomic & Molecular Physics » Rate Equation

Appeared in Year: 2012

MCQ▾

Question

Consider a He – Ne laser cavity consisting of two mirrors of reflectivity Equation and Equation . The mirrors are separated by a distance Equation and the medium in between has a refractive index Equation and absorption coefficient Equation . The values of the separation between the modes Equation and the width Equation of each mode of the laser cavity are – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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 Equation and Equation . What is the probability that at temperature T, the system has an energy less than Equation ?

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

(June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 12

» Atomic & Molecular Physics » LS & JJ Couplings

Appeared in Year: 2012

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

2

d.

1

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