i need the answer quickly Assignment:Problem 84.How much intensity of the image isincreased if the diameter of the objectiveof a telescope is doubled?Explain!

Solution. On doubling the diameter, the area of the objective increases four times. Its light…

Answered: How much intensity of the image is…

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter2: Geometric Optics And Image Formation

Section: Chapter Questions

Problem 105P: A 7.5 binocular produces an angular magnification of —7.50, acting like a telescope. (Mirrors are...

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Similar questions

Give three advantages that the Fresnel lens design has over that of a conventional lens with the same size and focal length.
The accommodation limits for a nearsighted persons eyes are 18.0 cm and 80.0 cm. When he wears his glasses, he can see faraway objects clearly. At what minimum distance is he able to see objects clearly?
Where does an object need to be placed relative to a microscope for its 0.50 cm-focal length objective to produce a magnification of —400?
Construct Your Own Problem Consider a telescope of the type used by Galileo, having a convex objective and a concave eyepiece as illustrated in part (a) of Figure 2.40. Construct a problem in which you calculate the location and size of the image produced. Among the things to be considered are the focal lengths of the lenses and their relative placements as well as the size and location of the object. Verify that the angular magnification is greater than one. That is, the angle subtended at the eye by the image is greater than the angle subtended by the object.
Suppose a certain person’s visual acuity is such that he can see objects clearly that term an image 4.00 m high on his retina. What is the maximum distance at which he can read the 75.0 cm high letters on the side of an airplane?
(a) The print in many books averages 3.50 mm in height. How high is the image at the print on the retina when the book is held 30.0 cm from the eye? (b) Compare the size of the print to the sizes of rods and cones in the fovea and discuss the possible details observable in the letters. (The eye-brain system can perform better because of interconnections and higher order image processing.)
A large reflecting telescope has an objective mirror with a 10.0-rn radius of curvature. What angular magnification does it produce when a 3.00 m-focal length eyepiece is used?
The shell” of a concept map dealing with lenses and their properties is shown in Concept Map 9.2. Most of the concepts and all of the linking phrases needed to form meaningful propositions have been left out. Complete this map by selecting the appropriate concepts and linkages from the lists that follow. Some connecting words will have to be used more than once to finish the map correctly. If you need to, be sure to review Sections 9.3 through 9.5 for help in properly determining and relating the relevant concepts.
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?
A digital camera equipped with an f = 50.0-mm lens uses a CCD sensor of width 8.70 mm and height 14.0 mm. Find the closest distance from the camera to a 1.80-m-tall person if the persons full image is to 6t on the CCD sensor.
A digital camera equipped with an f = 50.0-mm lens uses a CCD sensor of width 8.70 mm and height 14.0 mm. Find the closest distance from the camera to a 1.80-m-tall person if the persons full image is to 6t on the CCD sensor.
A nearsighted person cannot see objects clearly beyond 25.0 cm (her far point). If she has no astigmatism and contact lenses are prescribed for her, what (a) power and (b) type of lens are required to correct her vision?

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How much intensity of the image is increased if the diameter of the objective of a telescope is doubled?