CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 68  71 of 463
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Question number: 68
» Thermodynamic and Statistical Physics » Micro and MacroStates
Appeared in Year: 2012
Question
Consider a system of non – interacting particle in d dimensions obeying the dispersion relation where is the energy, k is wavevector, s is an integer and A a constant. The density of states, is proportional to – (June)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 69
» Quantum Mechanics » SpinStatistics Connection
Appeared in Year: 2013
Question
A spinparticle is in the state in the eigen basis and . If we measure, the probabilities of getting and , respectively, are (December)
Choices
Choice (4)  Response  

a.  0 and 1 

b. 


c. 


d. 


Question number: 70
» Electronics and Experimental Methods » Operational Amplifiers
Appeared in Year: 2014
Question
An opamp based voltage follower – (June)
Choices
Choice (4)  Response  

a.  Is useful for converting a high impedance source into a low impedance source 

b.  Has infinitely high closed loop gain. 

c.  Is useful for converting a low impedance source into a high impedance source. 

d.  Has infinitely high closed loop output impedance. 

Question number: 71
» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications
Appeared in Year: 2014
Question
Consider an electromagnetic wave at the interface between two homogeneous dielectric media of dielectric constant and. Assuming and no charge on the surface, the electric field vector and the displacement vector in the two media satisfy the following inequalities – (June)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

