At the undergraduate level while studying Physics as a Major Subject one hasto have indepth understanding of certain topics.  One such topic is Statistical Mechanics.  It analysis the behaviour of individual particles and shows the result in macroscopic parameters like pressure, volume and temperature.  In spite of many books that have already been written in this field, the students of undergraduate course often finds it difficult to grasp the subject in its entirety.  Keeping his in mind the author has prepared this crisp volume in a lucid language illustrating many samples and relevant worked out problems for the sale of effortless comprehension.