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fsc-pctb-12:notes:ch20 [2023/08/11 12:53] – created mizharfsc-pctb-12:notes:ch20 [2023/08/11 12:57] (current) mizhar
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-====== Chapter 19Dawn of Modern Physics ====== +====== Chapter 20Atomic Spectra ====== 
-This is a ninth chapter of the book Physics 12 published by Punjab Curriculum and Textbook Board, Lahore, Pakistan.+This is a twentieth chapter of the book Physics 12 published by Punjab Curriculum and Textbook Board, Lahore, Pakistan.
  
 After studying this chapter, the students will be able to: After studying this chapter, the students will be able to: