A lens is formed from a plastic material that has an index of refraction of 1.57....
A lens is formed from a plastic material that has an index of refraction of 1.55. If the radius of curvature of one surface is 1.25 m and the radius of curvature of the other surface is 1.75 m, use the lens maker's equation to calculate the focal length and the power of the lens.
1) A toy car is placed 57.0 cm from a convex mirror. The image of the car is upright and one-fifth as large as the actual car. Calculate the mirror's power in diopters. 2) A lens is formed from a plastic material that has an index of refraction of 1.55. If the radius of curvature of one surface is 1.05 m and the radius of curvature of the other surface is 1.95 m, use the lensmaker's equation to calculate the...
A contact lens is made of plastic with an index of refraction of 1.42. The lens has an outer radius of curvature of +1.95 cm and an inner radius of curvature of +2.48 cm. What is the focal length of the lens?
1)A 21.0 cm tall cup is placed 77.3 cm away from the center of a concave mirror with a focal length of 47.0 cm . What is the height of the cup's mirror image in cm? 2)Gwen sees her image in a reflective, spherical tree ornament that has a diameter of 8.7 cm.8.7 cm. The image is upright and is located 1.2 cm1.2 cm behind the surface of the ornament. How far LL from the ornament is Gwen located cm?...
A contact lens is made of plastic with an index of refraction of 1.32. The lens has an outer radius of curvature of +2.01 cm and an inner radius of curvature of +2.45 cm. What is the focal length of the lens? cm
A contact lens is made of plastic with an index of refraction of 1.3S. The lens has an outer radius of curvature of +2.10 cm and inner radius of curvature of +2.58 cm what is the focal length of the lens?
A contact lens is made of plastic with an index of refraction of 1.58. The lens has an outer radius of curvature of +1.99 cm and an inner radius of curvature of +2.46 cm. What is the focal length of the lens? cm Need Help? Watch
The figure illustrates qualitatively a corrective lens of -2.75 diopters. R 8.46 cm The lens material is CR-39 monomer, with an index of refraction of 1.499. Calculate R, the radius of curvature of the outer surface for the lens. Note: the diopter is a measure of the refractive power of a lens, and equals the reciprocal of the focal length in meters. (Example: for +3 diopters, f=0.333 meters.) -18.54 cm Submit Answer Incorrect. Tries 4/12 Previous Tries
A thin lens is made of material that has an index of refraction of 1.50. When an object 10 mm tall is placed 500 mm away from the lens, an upright image 31.5 mm tall is formed. One surface of the lens is concave, with an absolute value of radius of curvature of 350 mm. What is the radius of curvature of the other surface? Express your answer with the appropriate units. Follow the sign convention
A typical human lens has an index of refraction of 1.430. The lens has a double convex shape, but its curvature can be varied by the ciliary muscles acting around its rim. At minimum power, the radius of the front of the lens is 10.0 mm, whereas that of the back is 6.00 mm. At maximum power, the radii are 6.50 mm and 5.50 mm, respectively. If the lens were in air, what would be the maximum power and associated...