Bulletin of Pure and Applied Sciences Section-D-Physics is devoted to the international advancement of organized knowledge on all aspects of Physics. It is an international peer-reviewed journal committed to publish and disseminate original research in the field of physics (pure and applied) through a fair and rigorous review process. Scope of the journal includes: Atomic and molecular physics, condensed matter, elementary particles and nuclear physics, gases, fluid dynamics and plasmas, electromagnetism and optics, mathematical physics, and interdisciplinary, classical and applied physics. It provides a forum for comments by publishing original research contributions, scientific survey, case studies, book review and letter to the Editor-in-Chief. Bulletin of Pure and Applied Sciences Section-D-Physics is issued six monthly, i.e. June and December of every year. The Editor-in-Chief/Managing Editor/Editorial Board etc. assumes no responsibility for the statements and opinions advanced by the contributors. The editorial staff in its work of examining papers, received for possible publication is assisted, in an honorary capacity, by a large number of distinguished scientists working in various parts of the world. Bulletin of Pure and Applied Sciences Section-D-Physics is copy-righted. Manuscripts published in the Bulletin should not be reproduced without the written permission of the Editor-in-Chief.