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
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 » BlackBody Radiation and Planck's Distribution Law
Appeared in Year: 2013
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
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
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 
