Thermodynamic and Statistical Physics [CSIR (Council of Scientific & Industrial Research) Physical Sciences]: Questions 25 - 28 of 89
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Question 25
Appeared in Year: 2011
Question MCQ▾
A particle is confined to the region by a potential which increases linearly as . The mean position of the particle at temperature T is – (June)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 26
Appeared in Year: 2014
Question MCQ▾
A random walker takes a step of unit length in the positive direction with probability and a step of unit length in the negative direction with probability . The mean displacement of the walker after n steps is – (December)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | 0 | |
d. |
Question 27
Appeared in Year: 2011
Question MCQ▾
Consider the transition of liquid water to steam as water boils at a temperature of 1000 C under a pressure of 1 atmosphere. Which one of the following quantities does not change discontinuously at the transition? - (June)
Choices
Choice (4) | Response | |
---|---|---|
a. | The entropy | |
b. | The specific volume | |
c. | The Gibbs free energy | |
d. | The internal energy |
Question 28
Appeared in Year: 2011
Question MCQ▾
A system of N non – interacting spin particles is placed in external magnetic field H. The behaviour of the entropy of the system as a function of energy is given by – (December)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |