Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Concept explainers
Question
Chapter 30, Problem 2A
To determine
To distinguish: focal point and focal plane.
Expert Solution & Answer
Explanation of Solution
Introduction:
Focal point is a point on the principal axis of a lens on its either side. A lens has two focal points named first and second focal points respectively.
Focal point for a converging lens or convex lens is a point on the principal axis of the lens where the light rays being incident parallel to the principal axis of a lens, converges at this point after refraction.
Focal point for a diverging lens or concave lens is a point on the principal axis of the lens where the light rays appear to diverge after being incident parallel to the principal axis of the lens.
Focal plane is any plane drawn perpendicular to the focal points of a lens. For a converging lens, the image of a light ray incident parallel to the principal axis of the lens, the image converges through focal plane. And for a diverging lens, the image of a light ray incident parallel to the principal axis of the lens, the image appears to diverge through focal plane.
Conclusion:
Hence, focal point is a point on the principal axis of the lens where the light rays converge or appear to diverge while focal plane is a perpendicular line along the focal point of a lens.
Chapter 30 Solutions
Conceptual Physics: The High School Physics Program
Ch. 30 - Prob. 1ACh. 30 - Prob. 2ACh. 30 - Distinguish between a virtual image and a real...Ch. 30 - There are three convenient rays commonly used in...Ch. 30 - Prob. 5ACh. 30 - Prob. 6ACh. 30 - What types of images are formed by converging...Ch. 30 - What types of images are formed by diverging...Ch. 30 - Prob. 9ACh. 30 - What is the function of the eyepiece in an...
Ch. 30 - What type of lenses are used in a compound...Ch. 30 - Which instrument—a telescope, a compound...Ch. 30 - Prob. 13ACh. 30 - Prob. 14ACh. 30 - Prob. 15ACh. 30 - Prob. 16ACh. 30 - Percy stands at different distances from a lens...Ch. 30 - Depending on the location of Percy relative to the...Ch. 30 - Here Percy is in front of a diverging lens....Ch. 30 - When you cover the top half of a camera lens, what...Ch. 30 - What will happen to the image projected onto a...Ch. 30 - Prob. 22ACh. 30 - How could you demonstrate that an image was indeed...Ch. 30 - Prob. 24ACh. 30 - In terms of focal length, how far is the camera...Ch. 30 - Can you photograph yourself in a mirror and focus...Ch. 30 - If you take a photograph of your image in a plane...Ch. 30 - Copy the three drawings in the figure. Then use...Ch. 30 - Maps of the moon are actually upside down. Why is...Ch. 30 - The real image produced by a converging lens is...Ch. 30 - In which case does light undergo the greater...Ch. 30 - In which case is refraction greater, light in...Ch. 30 - From water to glass, the change in the speed of...Ch. 30 - A whales eye uses hydraulics to move the lens of...Ch. 30 - Focal-length variations in birds and reptiles are...Ch. 30 - Prob. 36ACh. 30 - If you have ever watched a water strider or other...Ch. 30 - What is responsible for the rainbow-colored fringe...Ch. 30 - Waves overlap very little in the image of a...Ch. 30 - Prob. 40ACh. 30 - Prob. 41ACh. 30 - Determine the magnification power of a lens by...Ch. 30 - Make a pinhole camera, as illustrated in the...
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