CSIR Physical Sciences: Questions 238  240 of 401
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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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Question number: 240
» Electromagnetic Theory » Radiation From Moving Charges
Appeared in Year: 2013
Question
An oscillating current flows in the direction of the y – axis through a thin metal sheet of area kept in the plane. The rate of total energy radiated per unit area from the surfaces of the metal sheet at a distance of 100 m is – (June – 2013)
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