Lens Object Screen The figure shows a converging glass lens in air, an object to the left of the lens, and a screen to the right of the lens. The entire system is placed in a vacuum, which has an index of refraction slightly lower than that of air. How will the focal length of the lens change, and why? The focal length will decrease because incident light will refract less when the medium is changed. The focal length will decrease because incident light will refract more when the medium is changed. The focal length will increase because incident light will refract less when the medium is changed. The focal length will increase because incident light will refract more when the medium is changed.

Lens Object Screen The figure shows a converging glass lens in air, an object to the left of the lens, and a screen to the right of the lens. The entire system is placed in a vacuum, which has an index of refraction slightly lower than that of air. How will the focal length of the lens change, and why? The focal length will decrease because incident light will refract less when the medium is changed. The focal length will decrease because incident light will refract more when the medium is changed. The focal length will increase because incident light will refract less when the medium is changed. The focal length will increase because incident light will refract more when the medium is changed.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter26: Image Formation By Mirrors And Lenses

Section: Chapter Questions

Problem 33P: The left face of a biconvex lens has a radius of curvature of magnitude 12.0 cm, and the right face...

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A 7.5 binocular produces an angular magnification of —7.50, acting like a telescope. (Mirrors are used to make the image upright.) If the binoculars have objective lenses with a 75.0-cm focal length, what is the focal length of the eyepiece lenses?
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Figure P38.43 shows a concave meniscus lens. If |r1| = 8.50 cm and |r2| = 6.50 cm, find the focal length and determine whether the lens is converging or diverging. The lens is made of glass with index of refraction n = 1.55. CHECK and THINK: How do your answers change if the object is placed on the right side of the lens? FIGURE P38.43