24_InstSolManual_PDF_Part19

# 24_InstSolManual_PDF_Part19 - the principal ray diagram...

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(c) The principal ray diagram is drawn in Figure 24.53. The diagram shows that the image is 24.0 cm to the right of the lens. Figure 24.53 (d) gives The calculated image position agrees with the principal ray diagram. Reflect: The lens is converging and so the image is real. 24.54. Set Up: The ray is traveling toward a point on the optic axis that is 6.0 cm to the right of the lens. Solve: (a) The ray is bent away from the axis by the lens so the lens is diverging. (b) The ray is parallel to the optic axis after it passes through the lens, so it was initially traveling toward the focus. (c) The principal ray diagram is drawn in Figure 24.54. The diagram shows that the image is 3.0 cm to the left of the lens. Figure 24.54 (d) gives The calculated image position agrees with
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Unformatted text preview: the principal ray diagram. 24.55. Set Up: If extended backwards the ray comes from a point on the optic axis 18.0 cm from the lens and is parallel to the optic axis after it passes through the lens. Solve: (a) The ray is bent toward the optic axis by the lens so the lens is converging. (b) The ray is parallel to the optic axis after it passes through the lens so it comes from the focal point; f 5 18.0 cm. s 5 10.0 cm. s r 5 sf s 2 f 5 1 6.0 cm 21 2 6.0 cm 2 6.0 cm 2 1 2 6.0 cm 2 5 2 3.0 cm. 1 s 1 1 s r 5 1 f 1 3 2 F 2 F 1 Object Image f 5 2 6.0 cm. s 5 6.0 cm. s . f , s r 5 sf s 2 f 5 1 12.0 cm 21 8.0 cm 2 12.0 cm 2 8.0 cm 5 1 24.0 cm. 1 s 1 1 s r 5 1 f F 2 F 1 Object Image 2 3 1 Geometric Optics 24-19...
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