CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 237  239 of 463
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Question number: 237
» Electronics and Experimental Methods » AD and Da Converters
Appeared in Year: 2013
Question
A 4 – variable switching function is given by, ; where is the do not care condition. The minimized form of in sum of products (SOP) from is – (Dec– 2013)
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Question number: 238
» Thermodynamic and Statistical Physics » Random Walk
Appeared in Year: 2014
Question
In one dimension, a random walker takes a step with equal probability to the left or right. What is the probability that the walker returns to the starting point after 4 steps? (June – 2014)
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Question number: 239
» Condensed Matter Physics » Free Electron Theory
Appeared in Year: 2014
Question
The dispersion relation for electron in an f. c. c. crystal is given, in the tight binding approximation, by ; where a is the lattice constant and is a constant with the dimension of energy. The x – component of the velocity of the electrons at is – (June – 2014)
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