You can download the Class 10 Geography book in Bengali PDF from the official website of the West Bengal Board of Secondary Education (WBBSE). The West Bengal government provides free digital textbooks for students on their official portals. Additionally, you may find NCERT Bengali books on the NCERT website if the book follows the national syllabus. Some third-party educational websites also host these PDFs, but always ensure you download from an authentic source to avoid outdated or incorrect material.