Name the electromagnetic radiations used for (a) water purification, and (b) eye surgery.
a) Ultraviolet rays (UV rays) are used for water purification b) ultraviolet rays/laser is used for in eye surgery.
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
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