Savia Asked a Question
August 31, 2020 8:44 pmpts 30 pts
A thin lens of glass (u = 1.5) of focal lengath + 10 cm is immersed in water (u = 1.33). Ihe new focal length is (A) 20 cm (B) 40 cm (C) 48 cm (D) 12 cm
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