Physics: Principles with Applications
Physics: Principles with Applications
6th Edition
ISBN: 9780130606204
Author: Douglas C. Giancoli
Publisher: Prentice Hall
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Chapter 25, Problem 42P
To determine

The magnification of the given microscope

Expert Solution & Answer
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Answer to Problem 42P

Solution:

The magnification of the given microscope is found to be 520 X

Explanation of Solution

Microscopes are devices used to magnify tiny objects. The construction of the microscope is similar to that of the telescope. The objective produces a real and inverted image of the object, which falls between the focus and the optic centre of the eyepiece. The eyepiece produces an enlarged virtual image of the image formed by the objective. The final image formed is inverted and enlarged.

Given:

Focal length of the eyepiece fe=2.5 cm

Barrel length l=17 cm

Focal length of the objective lens fo=0.33 cm

Formula used:

For a relaxed eye, the image is formed at infinity. If the values of fe and fo are very less compared to the value of l, then, the magnification is given by,

M=Nlfefo

Here, N is the near point of the eye, for normal eye, N has a value of 25 cm.

Calculation:

Substitute the given values of N, l,fe and fo in the expression and simplify.

M=Nlfefo=(25 cm)(17 cm)(2.5 cm)(0.33 cm)=515.1=520 X

Chapter 25 Solutions

Physics: Principles with Applications

Ch. 25 - Prob. 11QCh. 25 - Explain why chromatic aberration occurs for thin...Ch. 25 - Prob. 13QCh. 25 - Prob. 14QCh. 25 - Prob. 15QCh. 25 - Prob. 16QCh. 25 - Prob. 17QCh. 25 - Prob. 18QCh. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - Prob. 3PCh. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - If a 135-mm telephoto lens is designed to cover...Ch. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - A person struggles to read by holding a book at...Ch. 25 - Prob. 11PCh. 25 - An eye is corrected by a - 5.50-D lens, 2.0 cm...Ch. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - A person has a far point of 14 cm. What power...Ch. 25 - Prob. 16PCh. 25 - Prob. 17PCh. 25 - Prob. 18PCh. 25 - Prob. 19PCh. 25 - Prob. 20PCh. 25 - Prob. 21PCh. 25 - Prob. 22PCh. 25 - Prob. 23PCh. 25 - Prob. 24PCh. 25 - A magnifying glass with a focal length of 9.2 cm...Ch. 25 - Prob. 26PCh. 25 - Prob. 27PCh. 25 - Prob. 28PCh. 25 - Prob. 29PCh. 25 - A 7.0x binocular has 3.5-cm-focal-length...Ch. 25 - Prob. 31PCh. 25 - 35. (II) An astronomical telescope has its two...Ch. 25 - 36. (II) A Galilean telescope adjusted for a...Ch. 25 - Prob. 34PCh. 25 - Prob. 35PCh. 25 - Prob. 36PCh. 25 - Prob. 37PCh. 25 - Prob. 38PCh. 25 - Prob. 39PCh. 25 - Prob. 40PCh. 25 - Prob. 41PCh. 25 - Prob. 42PCh. 25 - A microscope has a 14.0x eyepiece and a 60.0x...Ch. 25 - Repeat Problem 46 assuming that the final image is...Ch. 25 - Prob. 45PCh. 25 - An achromatic lens is made of two very thin...Ch. 25 - Prob. 47PCh. 25 - Prob. 48PCh. 25 - Prob. 49PCh. 25 - Two stars 18 light-years away are barely resolved...Ch. 25 - Prob. 51PCh. 25 - Prob. 52PCh. 25 - Prob. 53PCh. 25 - Prob. 54PCh. 25 - Prob. 55PCh. 25 - Prob. 56PCh. 25 - Prob. 57PCh. 25 - Prob. 58GPCh. 25 - Prob. 59GPCh. 25 - Prob. 60GPCh. 25 - Prob. 61GPCh. 25 - Prob. 62GPCh. 25 - Prob. 63GPCh. 25 - Prob. 64GPCh. 25 - Prob. 65GPCh. 25 - Prob. 66GPCh. 25 - Prob. 67GPCh. 25 - Prob. 68GPCh. 25 - Prob. 69GPCh. 25 - Prob. 70GPCh. 25 - Prob. 71GPCh. 25 - Prob. 72GPCh. 25 - Prob. 73GPCh. 25 - Prob. 74GP
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