RAS Mains: Physics by Biresh Sharma Sir, published by Ceramic Academy, is a complete English-medium preparation book for the Rajasthan Administrative Service (RAS) Mains Examination. Fully revised according to the latest RAS 2026 syllabus, the book provides comprehensive coverage of core physics topics, including mechanics, electricity and magnetism, optics, thermodynamics, modern physics, and other exam-relevant concepts. With a structured, concept-based, and exam-oriented approach, it helps aspirants strengthen their understanding, improve problem-solving skills, and build confidence for the RAS Mains Physics paper. It is an essential resource for candidates seeking thorough and syllabus-focused preparation.