GATE (Graduate Aptitude Test in Engineering) Physics: Questions 6 - 8 of 622

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Question number: 6

» Thermodynamics and Statistical Physics » Probability Ensembles

Appeared in Year: 2016

Short Answer Question▾

Write in Short

The entropy Equation of a system of Equation spins, which may align either in the upward or in the downward direction, is given by Equation . Here, Equation is the Boltzmann constant. The probability of alignment in the upward direction is Equation . The value of Equation , at which the entropy is maximum is Equation (Give your answer up to one decimal place)

Question number: 7

» Classical Mechanics » Conservation Laws

Appeared in Year: 2014

MCQ▾

Question

The recoil momentum of an atom is Equation when it emits an infrared photon of wavelength Equation , and it is Equation when it emits a photon of visible wavelength Equation . The ratio Equation is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 8

» Thermodynamics and Statistical Physics » Macrostates and Microstates

Appeared in Year: 2015

MCQ▾

Question

Consider a system of N non – interacting spin Equation particles, each having a magnetic moment Equation , is in a magnetic field Equation . If Equation is the total energy of the system, the number of accessible microstates Equation is given by,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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