NCERT Important Questions Class 10 Science physics Chapter 11
Important NCERT Extra Questions
Chapter 11 Human Eye and Colorful World
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
Fill in the blanks: Bi-focal lens is used to correct ……….. refractive error.
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Bi-focal lens is used to correct Presbyopic refractive error.