CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 88  91 of 463
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Question number: 88
» Mathematical Methods of Physics » Elementary Probability Theory
Appeared in Year: 2012
Question
An unbiased dice is thrown three times successively. The probability that the numbers of dots on the uppermost surface add up to 16 is – (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 89
» Electromagnetic Theory » Scalar and Vector Potentials
Appeared in Year: 2012
Question
The magnetic field corresponding to the vector potential where is a constant vector, is – (June)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 90
» Electronics and Experimental Methods » Operational Amplifiers
Appeared in Year: 2014
Question
Consider the amplifier circuit comprising of two
If the input ac signal has an impedance of , which of the following statements is true? (December)
Choices
Choice (4)  Response  

a.  is required in the circuit if the output has to follow the phase of the input signal. 

b.  is required in the circuit because the source impedance is much greater than r 

c.  is required in the circuit because the source impedance is much less than R 

d.  can be eliminated from the circuit without affecting the overall gain 

Question number: 91
» Mathematical Methods of Physics » Binomial, Poisson and Normal Distributions
Appeared in Year: 2014
Question
If the electrostatic potential in spherical polar coordinates is; where and are constants, then the charge density at a distance will be – (June)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

