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91.A convex glass lens (μ = 1.5) has a focal length of 8 cm when placed in air. What is the focal length of the lens when it is immersed in water (μ = 4/3)? 1) 32 cm 2) 6 cm 3) 16 cm 4) 30 cm

Answer» 91.A convex glass lens (μ = 1.5) has a focal length of 8 cm when placed in air. What is the focal length of the lens when it is immersed in water (μ = 4/3)? 1) 32 cm 2) 6 cm 3) 16 cm 4) 30 cm


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