CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 209  211 of 463
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Question number: 209
» 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)
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Question number: 210
» Quantum Mechanics » SpinStatistics Connection
Appeared in Year: 2014
Question
Let, where are the Pauli matrices. If and are two arbitrary constant vectors in three dimensions, the commutator is equal to (in the following I is the identity matrix). (December)
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Question number: 211
» Classical Mechanics » Two Body Collisions » Scattering in Laboratory
Appeared in Year: 2014
Question
In deep inelastic scattering electrons are scattered off protons to determine if a proton has any internal structure. The energy of the electron for this must be at least (December)
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