Lens Focal Length in Water (JEE Mains) | ExamDuo
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Lens Focal Length in Water
A convex lens mode of glass (refractive index = 1.5) has focal length 24 cm in air. When it is totally immersed in water (refractive index = 1.33), its focal length changes to
SELECT ONE OPTION
A
72 cm
B
96 cm
C
24 cm
D
48 cm
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