CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 108  111 of 463
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Question number: 108
» Quantum Mechanics » Commutators and Heisenberg Uncertainty Principle
Appeared in Year: 2012
Question
The commutator is – (June)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 109
» Classical Mechanics » Dynamical System
Appeared in Year: 2014
Question
The radius of Earth is approximately 6400 km. The height h at which the acceleration due to Earth’s gravity differs from at the Earth’s surface by approximately 1 % is – (December)
Choices
Choice (4)  Response  

a.  48 km 

b.  16 km 

c.  32 km 

d.  64 km 

Question number: 110
» Quantum Mechanics » Timeindependent Perturbation Theory and Applications
Appeared in Year: 2013
Question
The motion of a particle of mass m in one dimension is described by the Hamiltonian. What is the difference between the (quantized) energy of the first two levels? (In the following, is the expectation value of in the ground state. )
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 111
» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications
Appeared in Year: 2012
Question
Four charges (two + q and two –q) are kept fixed at the four vertices of a square of side a as shown
At the point P which is at a distance R from the centre, the potential is proportional to – (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

