A great video lecture conducted by experienced physics teacher on 11th class physics chapter 1 topic1.1 significant figures. Get full understanding or ask any questions.
Significant Figures, ch 1, lec 1.5, Significant Figures - Inter Part 1 Physics
18:41
Significant Figures, ch 1, lec 1.5, Significant Figures - Inter Part 1 Physics
31:34