CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 277  280 of 463
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Question number: 277
» Thermodynamic and Statistical Physics » Planck's Distribution Law
Appeared in Year: 2013
Question
Let be a random variable uniformly distributed in the interval and , where is a real constant. If V is to be exponentially distributed in the interval with unit standard deviation, then the value of should be – (June)
Choices
Choice (4)  Response  

a. 


b.  1 

c.  1 

d. 


Question number: 278
» Condensed Matter Physics » Bonding of Solids
Appeared in Year: 2014
Question
The van der Waals’ equation of state for a gas is given by, Where P, V and T represent the pressure, volume and temperature respectively, and and are constant parameters. At the critical point, where all the roots of the above cubic equation are degenerate, the volume is given by, (June – 2014)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 279
» Thermodynamic and Statistical Physics » Fermi Gases
Appeared in Year: 2014
Question
The pressure of a nonrelativistic free Fermi gas in three – dimension depends, at , on the density of fermions as. (June – 2014)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 280
» Atomic & Molecular Physics » Relativistic Corrections for Energy Levels of Hydrogen Atom
Appeared in Year: 2014
Question
A permanently deformed even – even nucleus with has rotational energy 93 KeV. The energy of next excited state is – (June – 2014)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

