Thermodynamic and Statistical Physics (CSIR Physical Sciences): Questions 34 - 36 of 56

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Question number: 34

» Thermodynamic and Statistical Physics » Ising Model

Appeared in Year: 2013

MCQ▾

Question

Consider a system of two Ising spins Equation and Equation taking values Equation with interaction energy given by Equation , when it is in thermal equilibrium at temperature T. For large T, the average energy of the system varies as Equation , with C given by,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 35

» Thermodynamic and Statistical Physics » Bose-Einstein Condensation

Appeared in Year: 2014

MCQ▾

Question

The recently discovered Higgs boson at the LHC experiment has a decay mode into a photon and a Z boson. If the rest masses of the Higgs and Z boson are Equation and Equation respectively, and the decaying Higgs particle is at rest, the energy of photon will approximately be – (June – 2014)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 36

» Thermodynamic and Statistical Physics » Planck's Distribution Law

Appeared in Year: 2013

MCQ▾

Question

Let Equation be a random variable uniformly distributed in the interval Equation and Equation , where Equation is a real constant. If V is to be exponentially distributed in the interval Equation with unit standard deviation, then the value of Equation should be – (June)

Choices

Choice (4) Response

a.

Equation

b.

-1

c.

1

d.

Equation

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