Thermodynamic and Statistical PhysicsBlackbody Radiation (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1  3 of 4
Access detailed explanations (illustrated with images and videos) to 464 questions. Access all new questions we will add tracking exampattern and syllabus changes. Unlimited Access for Unlimited Time!
View Sample Explanation or View Features.
Rs. 300.00 or
How to register?
Question number: 1
» Thermodynamic and Statistical Physics » Blackbody Radiation
Appeared in Year: 2014
Question
Which of the graphs below gives the correct qualitative behavior of the energy density of black body radiation of wavelength at two temperature and ? (June)
Choices
Choice (4)  Response  

a.  
b.  
c.  
d. 
Question number: 2
» Thermodynamic and Statistical Physics » Blackbody Radiation
Appeared in Year: 2011
Question
A cavity contains blackbody radiation in equilibrium at temperature T. The specific heat per unit volume of the photon gas in the cavity is of the form , where is a constant. The cavity is expanded to twice its original volume and then allowed to equilibrate at the same temperature T. The new internal energy per unit volume is – (June)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 3
» Thermodynamic and Statistical Physics » Blackbody Radiation
Appeared in Year: 2012
Question
Consider black body radiation contained in a cavity whose walls are at temperature T. The radiation is in equilibrium with the walls of the cavity. If the temperature of the walls is increased to 2T and the radiation is allowed to come to equilibrium at the new temperature, the entropy of the radiation increases by a factor of (June)
Choices
Choice (4)  Response  

a.  16  
b.  2  
c.  8  
d.  4 