Atomic & Molecular Physics (CSIR Physical Sciences): Questions 13 - 16 of 18

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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 H=aSeSp , where Se and Sp denote the electron and proton spins, respectively, the splitting between the 3S1 and 1S0 state is – (December)

Choices

Choice (4) Response
a.

a2

b.

a22

c.

a22

d.

2a2

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 D1 and D2 lines of sodium at high temperature – (December)

Choices

Choice (4) Response
a.

2:3

b.

1:1

c.

1:2

d.

1:3

Question number: 15

» Atomic & Molecular Physics » Born-Oppenheimer Approximation

Appeared in Year: 2011

MCQ▾

Question

The difference in the Coulomb energy between the mirror nuclei Cr and Mn is 6.0MeV . Assuming that the nuclei have a spherically symmetric charge distribution and that e2 is approximately 1.0MeVfm the radius of the Mn nucleus is – (December)

Choices

Choice (4) Response
a.

4.9×1013m

b.

5.1×1015m

c.

4.9×1015m

d.

5.1×1013m

Question number: 16

» Atomic & Molecular Physics » LS & JJ Couplings

Appeared in Year: 2012

MCQ▾

Question

The ground state of Pb nucleus has spin – parity jP=12 , while the first excited state has JP=52 . The electromagnetic radiations emitted when the nucleus makes a transition from the first excited state to the ground state are, (June)

Choices

Choice (4) Response
a.

E2andE3

b.

M2andM3

c.

E2andM3

d.

M2andE3

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