About the book
During the last two decades, global change and technological revolution have taken place in the field of study of sciences. Discoveries and innovations in science are applied to make living on the planet Earth more meaningful. Application of laws and principles of science to invent various gadgets and appliances for use of man and society is technology. The growth of science and development of new technologies are inter-related. Keeping this in view, the National Council of Educational Research and Training (NCERT) has prepared new syllabus in sciences for schools. this book has been written strictly in accordance with latest curriculum in Practical Physics for class XI, designed by NCERT and adopted by CBSE, New Delhi.
The study of history of science reveals the fact that experimental investigation forms the foundation of the growth and development of science. Seeing experiments being done, i.e., demonstration of experiments, is quite important for understanding the principles of Science. Performing experiments by one’s own hands is, however, far more important, because it involves ‘Learning by Doing’.
J.B. Andre Dumas once remarked ‘If I had to live my life again, I would always remain in my laboratory for the greatest joy of my life to accomplish original scientific work’.
It is needless to emphasize that for a real scientific training of a growing mind, a genuine laboratory practice is a must. In view of the latest guidelines issued by NCERT on Lab experiments and Activities the book has been thoroughly revised. An exclusive stress has been laid to add each experiment, Discussion, Self Assessment and Additional experiments and Activities.
Salient features of the book are as follows :
- The language used is simple, lucid and easy to understand by students.
- The basic concepts underlying various experiments and activities have been thoroughly explained.
- The procedural steps to be followed in various experiments have been systematically and logically arranged.
- The observation tables have been meticulously designed.
- Graphs and Diagrams have been accurately drawn and properly labelled.
- Specimen Viva Voce questions along with their answers are given at the end of a group of experiments. The list of such questions may be unending but these are the usual types of questions asked of practical examination.
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