A. K. Mody and H. C. Pradhan, “PROBLEM BASED LEARNING IN BASIC PHYSICS - XI”, SS, vol. 54, no. 4, pp. p.10–16, Jul. 2026, Accessed: Jul. 26, 2026. [Online]. Available: https://ejournals.ncert.gov.in/index.php/SS/article/view/5160