GATE (Graduate Aptitude Test in Engineering) Physics: Questions 183 - 186 of 659

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Question number: 183

» Atomic and Molecular Physics » Zeeman and Stark Effects

Appeared in Year: 2013

MCQ▾

Question

In a normal Zeeman effect experiment, spectral splitting of the line at the wavelength corresponding to the transition od cadmium atoms is to be observed. The spectrometer has a resolution of . The minimum magnetic field needed to observe this is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 184

» Thermodynamics and Statistical Physics » Black-Body Radiation and Planck's Distribution Law

Appeared in Year: 2013

MCQ▾

Question

Consider a gas of atoms obeying Maxwell – Boltzmann statistics. The average value of over all the momenta of each of the particles (where is a constant vector and is its magnitude, is the mass of each atom, T is temperature and is Boltzmann’s constant) is –

Choices

Choice (4) Response

a.

Zero

b.

c.

One

d.

Question number: 185

» Classical Mechanics » Moment of Inertia Tensor

Appeared in Year: 2011

MCQ▾

Question

A heavy symmetrical top is rotating about its own axis of symmetry (the axis). If and are the principal moments of inertia along and axes respectively, then –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 186

» Thermodynamics and Statistical Physics » Calculation of Thermodynemic Quantities

Appeared in Year: 2013

MCQ▾

Question

If Planck’s constant were zero, then the total energy contained in a box filled with radiation of all frequencies at temperature would be –

( is Boltzmann constant and is nonzero)

Choices

Choice (4) Response

a.

b.

c.

Zero

d.

Infinite

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