Revised Edition as per Rationalised NCERT/CBSE Syllabus. This textbook for Tenth Class Part 1 Physics is authored by Lakhmir Singh and Manjit Kaur. It includes chapter-wise videos on YouTube, scratch and win opportunities, and access to simulations, solved board papers, and solved exercises. Also provides NCERT Book Questions-answers, case-based questions, and assertion-reason based questions.