= A compound microscope is made from an objective lens of focal length fo = 4 mm, and an eyepiece of fe 15 mm. The objective lens is moved close to the object so that an intermediate image is formed 20 cm above the objective lens, and the eyepiece is set at its own focal length above the intermediate image, forming a virtual image at infinity for the user's eye. If the object is 0.1 mm in diameter, calculate: i) the required distance of the objective lens above the object. ii) the diameter of the intermediate image. iii) the angular size of the image to the user's eye. iv) The system angular magnification, defined as the angular size in (iii) divided by the angle subtended by the object to the naked eye from a distance of 25 cm.
= A compound microscope is made from an objective lens of focal length fo = 4 mm, and an eyepiece of fe 15 mm. The objective lens is moved close to the object so that an intermediate image is formed 20 cm above the objective lens, and the eyepiece is set at its own focal length above the intermediate image, forming a virtual image at infinity for the user's eye. If the object is 0.1 mm in diameter, calculate: i) the required distance of the objective lens above the object. ii) the diameter of the intermediate image. iii) the angular size of the image to the user's eye. iv) The system angular magnification, defined as the angular size in (iii) divided by the angle subtended by the object to the naked eye from a distance of 25 cm.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A compound microscope is made from an objective lens of focal length fo = 4 mm, and
an eyepiece of fe 15 mm. The objective lens is moved close to the object so that an
intermediate image is formed 20 cm above the objective lens, and the eyepiece is set at
its own focal length above the intermediate image, forming a virtual image at infinity for the
user's eye. If the object is 0.1 mm in diameter, calculate:
i) the required distance of the objective lens above the object.
ii) the diameter of the intermediate image.
iii) the angular size of the image to the user's eye.
iv) The system angular magnification, defined as the angular size in (iii) divided by the
angle subtended by the object to the naked eye from a distance of 25 cm.
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