CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 401  403 of 463
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Question number: 401
» Mathematical Methods of Physics » Analytic Functions
Appeared in Year: 2016
Question
The dependence of current on the voltage of a certain device is given by,
Where and are constant. In an experiment the current is measured as the voltage applied across the device is increased. The parameters and can be graphically determined as, (June)
Choices
Choice (4)  Response  

a.  The slope and the intercept of the graph 

b.  The negative of the ratio of the intercept and the slope, and the intercept of the graph 

c.  The slope and the intercept of the graph 

d.  The negative of ratio of intercept and slope, and intercept of the graph 

Question number: 402
» Mathematical Methods of Physics » CayleyHamilton Theorem
Appeared in Year: 2016
Question
The matrix satisfies the equation: (December)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 403
» Electronics and Experimental Methods » OptoElectronic Devices » LEDs
Appeared in Year: 2016
Question
The active medium in a blue LED (light emitting diode) is a alloy. The band gaps of and are and respectively. If the band gap of varies approximately linearly with , the value of required for the emission of blue light of wavelength is (take ) (December)
Choices
Choice (4)  Response  

a.  0.50 

b.  0.33 

c.  0.75 

d.  0.95 
