Question: An optometrist prescribes a corrective lens with a power of
An optometrist prescribes a corrective lens with a power of +1.5 D. The lens maker starts with a glass blank that has an index of refraction of 1.6 and a convex front surface whose radius of curvature is 20 cm. To what radius of curvature should the other surface be ground? Is the surface convex or concave?
Answer to relevant QuestionsA converging glass lens with an index of refraction of 1.62 has a focal length of 30 cm in air. (a) When the lens is immersed in water, the focal length of the lens will (1) increase, (2) remain the same, (3) decrease. ...A method of determining the focal length of a diverging lens is called auto collimation. As Fig. 23.30 shows, first a sharp image of a light source is projected onto a screen by a converging lens. Second, the screen is ...Given two pairs of sunglasses, could you tell whether one or both were polarizing? (a) If the apparatus for a Young’s double-slit experiment were completely immersed in water, would the spacing of the interference maxima (1) increase, (2) remain the same, or (3) decrease? Explain. (b) What would the ...A thin layer of oil (n = 1.50) floats on water. Destructive interference is observed for reflected light of wavelengths 480 nm and 600 nm, each at a different location. (a) If the order number is the same for both ...
Post your question