CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 338 - 340 of 463

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Question number: 338

» Thermodynamic and Statistical Physics » Free Energy

Appeared in Year: 2011

MCQ▾

Question

Assume that the free energy of a magnetic system has an expansion in the order parameter M of the form Equation , with Equation . As the temperature is lowered below Equation , the system undergoes a phase transition. The behaviour of the order parameter just below the transition, where Equation is very small, is best described by – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 339

» 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

Question number: 340

» Atomic & Molecular Physics » LS & JJ Couplings

Appeared in Year: 2011

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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