The diagram below shows the situation described in the problem. The focal length of the lens is labeled f; the scale on the optical axis is in centimeters. Draw the three special rays, Ray1, Ray2, and Ray3 as described in the Tactics Box above, and label each ray accordingly. Draw the rays from the tip of the object to the center vertical axis of the lens. Do not draw the refracted rays. Draw the vectors for the incident rays starting at the tip of the object to the center vertical axis of the lens. The location and orientation of the vectors will be graded. Vectors: Ray3 Ray though center of lens Ray2 Ray through near focal point Rayl Ray parallel to axis Unlabeled vector Object

The diagram below shows the situation described in the problem. The focal length of the lens is labeled f; the scale on the optical axis is in centimeters. Draw the three special rays, Ray1, Ray2, and Ray3 as described in the Tactics Box above, and label each ray accordingly. Draw the rays from the tip of the object to the center vertical axis of the lens. Do not draw the refracted rays. Draw the vectors for the incident rays starting at the tip of the object to the center vertical axis of the lens. The location and orientation of the vectors will be graded. Vectors: Ray3 Ray though center of lens Ray2 Ray through near focal point Rayl Ray parallel to axis Unlabeled vector Object

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter18: Refraction And Lenses

Section: Chapter Questions

Problem 89A

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An object is placed 10 m before a convex lens with focal length 5.2 m . Another concave lens is placed 15.6 m behind the first lens with a focal length −7.2 m (see the figure below). Note: Make a ray diagram sketch in order to check your numerical answer. At what distance is the first image from the first lens? Answer in units of m. What is the magnification of the first image? At what distance is the second image from the second lens? Answer in units of m. What is the magnification of the final image, when compared to the initial object?
A 1.5 cmcm high object is located 30 cmcm from a diverging lens, whose focal length is 11 cmcm . What is the height of the image produced by the lens? You have determined the height of the image using numerical methods and, in so doing, have also determined its position, s′s′s'. Now, use graphical methods to evaluate your results.The diagram below shows the object, a ray (ray 1) parallel to the optic axis of the lens, and a ray (ray 2) proceeding toward the first focal point of the lens. Draw the refracted rays and the image produced by the lens. Make sure you extend the refracted rays sufficiently backward in order to find the image. Keep in mind that principal-ray diagrams must be drawn accurately to give good results!
in step 1 why is the image distance -4 cm?
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