CSIR Physical Sciences: Questions 53  56 of 389
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Question number: 53
» Electronics and Experimental Methods » Digital Techniques and Applications » Registers
Appeared in Year: 2013
Question
If one of the inputs of J – K flip – flop is high and the other is low, then the outputs and – (December)
Choices
Choice (4)  Response  

a.  Oscillate between low and high in race – around condition  
b.  Follow the inputs and the circuit acts like an R – S flip – flop  
c.  Are opposite to the inputs  
d.  Toggle and the circuit acts like a T flip – flop 
Question number: 54
» Thermodynamic and Statistical Physics » BoseEinstein Condensation
Appeared in Year: 2014
Question
An ideal Bose gas is confined inside a container that is connected to a particle reservoir. Each particle can occupy a discrete set of single – particle quantum states. If the probability that a particular quantum state is unoccupied is 0.1, then the average number of bosons in that state is – (December)
Choices
Choice (4)  Response  

a.  10  
b.  11  
c.  8  
d.  9 
Question number: 55
» Electronics and Experimental Methods » Precision and Accuracy
Appeared in Year: 2014
Question
One gram of salt is dissolved in water that is filled to a height of 5 cm in a beaker of diameter 10 cm. The accuracy of length measurement is 0.01 cm while that of mass measurement is 0.01 mg. When measuring the concentration C, the fractional error is – (June)
Choices
Choice (4)  Response  

a.  0.5 %  
b.  0.28 %  
c.  0.14 %  
d.  0.8 % 
Question number: 56
» Quantum Mechanics » WaveFunction in Coordinate Representations
Appeared in Year: 2014
Question
Consider a system of two non – interacting identical fermions, each of mass m in an infinite square well potential of width a. (Take the potential inside the well to be zero and ignore spin. ) The composite wavefunction for the system with total energy is – (June)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
