A convex mirror has a focal length of -26 cm. Find the magnification produced by the mirror when the object distance is (a)11 cm and (b)21 cm. (a) m₁ = i (b) m₂ = i Object 2K Virtual image
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- The figure shows an object and its image formed by a thin lens. Assume that d1 = 0.595 m, d2 = 0.784 m, and h = 7.50E-2 m. What is the image height (in m; answer sign and magnitude)?A contact lens is made of plastic with an index of refraction of 1.40. The lens has an outer radius of curvature of +1.92 cm and an inner radius of curvature of +2.47 cm. What is the focal length of the lens? cmChapter 34, Problem 041 A lens is made of a transparent material having an index of refraction of 1.70. One side of the lens is flat, and the other convex with a radius of curvature of 27.0 cm. (a) Find the focal length of the lens. (b) If an object is placed 51.0 cm in front of the lens, where will the image be located? (a) Number Units (b) Number Units
- 35.3A convex mirror has a focal length of -21 cm. Find the magnification produced by the mirror when the object distance is (a)12 cm and (b)22 cm. (a) m₁ = (b) m₂ = < < i M. Object Virtual image < <An object is located at a distance of 7.00 cm from a thin lens with a radius of curvature of 66.0 mm. The image of the object is inverted. Is the image real or virtual, and how far is the image from the lens? a) Real, 6.24 cm b) Virtual, 6.24 cm c) Real, 116 cm d) Virtual, 116 cm e) Real, 2.2 cm
- 1. How far from the object should the lens be held?An object is 19.5 cm from the center of a spherical silvered-glass Christmas tree ornament 6.20 cm in diameter. ▼ Part A What is the position of its image (counting from the ornament surface)? Follow the sign rules. Express your answer with the appropriate units. s' = Submit ▾ Part B m = HA Value Submit Request Answer What is the magnification of its image? VG ΑΣΦ Units Request Answer PYREX ? ?The image of the coin in the figure is magnified by a factor of M = 4.7 times, and is a distance d = 9.4 cm from the lens. What is the focal length (in cm) of the lens? cm i
- Example 2: What is the image distance when a pencil is placed 29.7 cm from a diverging lens of focal length f = -9.9 cm. q743 cm. M 0 25 The image is (real / virtual) The image is (upright / inverted) The image distance is The Magnification, M =The distance from the lens of a particular eye to the retina is 1.96 cm. What is the focal length of the lens when the eye produces a clear image of an object 35.9 cm away? cm