CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 416  419 of 463
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Question number: 416
» Electromagnetic Theory » Electromagnetic Waves in Free Space
Appeared in Year: 2016
Question
A particle with charge moves with a uniform angular velocity in a circular orbit of radius in the plane, around a fixed charge , which is at the centre of the orbit at . Let the intensity of radiation at the point be and at be . The ratio , for , is: (December)
Choices
Choice (4)  Response  

a. 


b. 


c.  8 

d.  4 

Question number: 417
» Electromagnetic Theory » Dynamics of Charged Particles in Static Electromagnetic Field
Appeared in Year: 2016
Question
Suppose that free charges are present in a material of dielectric constant and resistivity . Using Ohm’s law and the equation of continuity for charge, the time required for the charge density inside the material to decay by is closest to: (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 418
» Quantum Mechanics » Elementary Theory of Scattering » Born Approximation
Appeared in Year: 2016
Question
A particle is scattered by a central potential , where and are positive constants. If the momentum transfer is such that , the scattering cross – section in the Born approximation, as , depends on as:
[You may use: ] (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 419
» Electronics and Experimental Methods » Digital Techniques and Applications » Registers
Appeared in Year: 2016
Question
Which of the following circuits implements the Boolean function ? (December)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
