5th Edition

ISBN: 8220103026918

Author: Walker

Publisher: PEARSON

Concept explainers

Optics is the study of light in the field of physics. It refers to the study and properties of light. Optical phenomena can be classified into three categories: ray optics, wave optics, and quantum optics. Geometrical optics, also known as ray optics, is…

Converging Lens

Converging lens, also known as a convex lens, is thinner at the upper and lower edges and thicker at the center. The edges are curved outwards. This lens can converge a beam of parallel rays of light that is coming from outside and focus it on a point on…

Plano-Convex Lens

To understand the topic well we will first break down the name of the topic, ‘Plano Convex lens’ into three separate words and look at them individually.

Lateral Magnification

In very simple terms, the same object can be viewed in enlarged versions of itself, which we call magnification. To rephrase, magnification is the ability to enlarge the image of an object without physically altering its dimensions and structure. This pr…

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Textbook Question

Chapter 27, Problem 91GP

Consider a Galilean telescope, as illustrated in Figure 27-29, constructed from two lenses with focal lengths of 75.6 cm and −18.0 mm. (a) What is the distance between these lenses if an infinitely distant object is to produce an infinitely distant image? (b) What is the angular magnification when the lenses are separated by the distance calculated in part (a)?

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Chapter 27, Problem 90GP

Chapter 27, Problem 92GP

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The primary optical element of the Hubble Space Telescope (HST) is 3.2 m in diameter and has a focal length of 62 m. (Treat it as a simple, single lens for this homework) The telescope is aimed at Jupiter and the collected light is focused onto a sensitive Charge Coupled Device (CCD) detector, similar to what is in a digital camera. Each pixel in the detector is a 21 μm x 21 μm square, and the full CCD is 4096 x 4096 pixels. Thus the CCD is about one square inch in size. The HST is in orbit very close to the Earth (compared to other distances in the Solar system). Size of Jupiter: 139,820 km in diameter Distance to Jupiter: 778 million km How many pixels in diameter is Jupiter's image on CCD?

The author imaged Jupiter when closest to the Earth last year using his 230mm aperture, f10, Schmidt-Cassegrain telescope with a 170 pixels per millimetre CCD camera having an effective area of 3.9× 2.8 mm. To increase the image scale the effective focal ratio of the telescope was increased by a factor of 2.5 by the use of a Barlow lens. (a) What was the effective focal length? (b) Calculate the field of view covered by the CCD array. (c) Estimate Jupiter's angular size given that it is in a circular orbit of radius 5.7 AU, and has a diameter of 142 800km. (1 AU=1.49×10*km.) (d) Assuming that Jupiter's equator lay parallel to one axis of the CCD chip, how many pixels lay across Jupiter's image? (e) Why do you think that the Barlow lens was used? 4.

Chapter 27 Solutions

EBK PHYSICS

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