You didn't mentioned the name of the books for which you are asking the PDF. You can follow the websites provided below for PDF of books in Physics for both in Graduation, Post Graduation as well as school level. The name of the website's are:

• Libgen
• PDF DRIVE
• Telegram channels

If you need the link from us, then you can repost the question with the name of the books & we can provide you if available.

For more information regarding Physics as a career, you can consider the link below:

https://www.careers360.com/courses/physics-course

I hope this helps. Have a great eve!