Atomic and Molecular Physics [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 27 - 31 of 58

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Question 27

Atomic and Molecular Physics

Appeared in Year: 2009

Question

MCQ▾

In a diatomic molecule, the internuclear separations of the ground and first excited electronic state are the same as shown in the figure. If the molecule is initially in the lowest vibrational state of the ground state, then the absorption spectrum will appear as –

The Internuclear Separation

Choices

Choice (4)Response

a.

The Absorption Spectrum (Choice A)

b.

The Absorption Spectrum (Choice B)

c.

The Absorption Spectrum (Choice C)

d.

The Absorption Spectrum (Choice D)

Question 28

Atomic and Molecular Physics

Appeared in Year: 2009

Question

MCQ▾

Cesium has a nuclear spin of . The hyperfine spectrum of the lines of the cesium atom will consist of –

Choices

Choice (4)Response

a.

b.

c.

d.

Passage

Consider the Zeeman splitting of a single electron system for the electric dipole transition.

Question 29 (1 of 2 Based on Passage)

Atomic and Molecular Physics

Question

MCQ▾

The fine structure line having the longest wavelength will spilt into –

Choices

Choice (4)Response

a.

components

b.

components

c.

components

d.

component

Question 30 (2 of 2 Based on Passage)

Atomic and Molecular Physics

Appeared in Year: 2009

Question

MCQ▾

The Zeeman spectrum is –

Choices

Choice (4)Response

a.

Only polarized

b.

and polarized

c.

Randomly polarized

d.

Only polarized

Question 31

Atomic and Molecular Physics
Two and Three Level Systems

Appeared in Year: 2007

Question

MCQ▾

In a laser, the laser transition takes place in –

Choices

Choice (4)Response

a.

only.

b.

first, then in

c.

only

d.

first, then is

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