CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 293  296 of 463
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 463 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 300.00 or
Question number: 293
» Quantum Mechanics » Elementary Theory of Scattering » Born Approximation
Appeared in Year: 2012
Question
A free particle describe by a plane wave and moving in the positive z – direction undergoes scattering by a potential,
If is changed to , keeping R fixed, then the differential scattering cross section, in the Born approximation, (June)
Choices
Choice (4)  Response  

a.  Increases to twice the original value 

b.  Decreases to one fourth the original value 

c.  Increases to four times the original value 

d.  Decreases to half the original value 

Question number: 294
» Mathematical Methods of Physics » Poles, Residues & Evaluation of Integrals
Appeared in Year: 2012
Question
The value of the integral
is – (June)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 295
» Electromagnetic Theory » Radiation From Moving Charges
Appeared in Year: 2012
Question
When a charged particle emits electromagnetic radiation, the electric field and the Poynting vector at a large distance from the emitter vary as and respectively. Which of the following choices for and are correct? (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 296
» Classical Mechanics » Rigid Body Dynamics  Moment of Inertia Tensor
Appeared in Year: 2012
Question
Two bodies of equal mass m are connected by a massless rigid rod of length lying in the XY – plane with the centre of the rod at the origin. If this system is rotating about the axis with a frequency , its angular momentum is – (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

