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(i) If f = 0.5 m for a glass lens, what ...

(i) If f = 0.5 m for a glass lens, what is the power of the lens ?
(Refractive index of air-water = 1.33. Refractive index for ar - glass = 1.5.)

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i) Power = `+2` dioptre.
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(ii) The radii of curvature of the faces of a double convex lens are 10 cm and 15cm. Its focal length is 12 cm. What is the refractive index of glass ? (Refractive index of air-water = 1.33. Refractive index for ar - glass = 1.5.)

(iii) A convex lens has 20 cm focal length in air. What is focal length in water ? (Refractive index of air-water = 1.33. Refractive index for ar - glass = 1.5.)

(i) If f = 0.5 m for a glass lens, what is the power of the lens? (ii) The radii of curvature of the faces of a double convex lens are 10 cm and 15 cm. Its focal length is 12 cm. What is the refractive index of glass? (iii) A convex lens has 20 cm focal length in air. What is focal length in water? (Refractive index of air-water = 1.33, refractive index for air-glass = 1.5.)

What is the Brewster angle for air to glass transition ? (Refractive index of glass = 1.5.)

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