CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 412  415 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: 412
» Nuclear and Particle Physics » Direct Reactions
Appeared in Year: 2016
Question
Which of the following reaction (s) is/are allowed by the conservation laws?
(i)
(ii) (December)
Choices
Choice (4)  Response  

a.  Only (i) 

b.  Only (ii) 

c.  Neither (i) nor (ii) 

d.  (i) and (ii) 

Question number: 413
» Classical Mechanics » Special Theory of Relativity » Relativistic Kinematics
Appeared in Year: 2016
Question
Consider a radioactive nucleus that is travelling at a speed with respect to the lab frame. It emits rays of frequency in its rest frame. There is a stationary detector (which is not on the path of the nucleus) in the lab. If a ray photon is emitted when the nucleus is closest to the detector, its observed frequency at the detector is: (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 414
» Quantum Mechanics » SpinStatistics Connection
Appeared in Year: 2016
Question
The identity matrix and Pauli matrices do not form a group under matrix multiplication. The minimum number of matrices, which includes these four matrices, and form a group (under matrix multiplication) is: (December)
Choices
Choice (4)  Response  

a.  20 

b.  8 

c.  16 

d.  12 

Question number: 415
» Thermodynamic and Statistical Physics » Random Walk
Appeared in Year: 2016
Question
Consider a random walk on an infinite twodimensional triangular lattice, a part of which is shown in the figure below.
If the probabilities of moving to any of the nearest neighbor site are equal, what is the probability that the walker returns to the starting position at the end of exactly three steps? (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

