भौतिकी कक्षा:-10th,प्रकाश का परावर्तन ओर अपवर्तन,class 10th ka पहला चैप्टर ( EDUCATION IS THE MILK OF THE LIONESS WHO DRANK HAS BROUGHT CHANGE IN HER LIFE AND CHANGED THE WORLD)BY:SUJEET SIR,8340763695,ARARIA, BIHAR in this website has special notes from 8th to 12th, available here all subjects