Chapter 35: Q. 15 (page 1017)

A microscope has a $20 c m$ tube length. What focal-length objective will give total magnification localid="1649845070556" $500 \times$ when used with an eyepiece having a focal length $5.0 c m$ ?

Short Answer

Expert verified

The objective will give a total magnification $500 \times$ is $0.2 c m$ .

Step by step solution

Given Information.

We have given that:

Tube length $L = 20 c m$ ,

Magnification localid="1649845198764" $M = 500 \times$

Focal length $f_{e y e} = 5 c m$

We need to find the focal length.

Simplification.

As we know a total magnification microscope:

$M = - \frac{L}{f_{o b j}} \times \frac{25}{f_{e y e}} 500 = \frac{20}{f_{o b j}} \times \frac{25}{5} 500 = \frac{20}{f_{o b j}} \times 5 500 = \frac{100}{f_{o b j}} f_{o b j} = \frac{100}{500} f_{o b j} = 0.2 c m$

Here $f_{o b j}$ is the focal length of an object and $M$ is magnification.

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A microscope has a $20 c m$ tube length. What focal-length objective will give total magnification localid="1649845070556" $500 \times$ when used with an eyepiece having a focal length $5.0 c m$ ?

Short Answer

Step by step solution

Given Information.

Simplification.

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A microscope has a 20cmtube length. What focal-length objective will give total magnification localid="1649845070556" 500×when used with an eyepiece having a focal length 5.0cm?

Short Answer

Step by step solution

Given Information.

Simplification.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Space Physics

Nuclear Physics

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Dynamics

Further Mechanics and Thermal Physics

Rotational Dynamics

Study anywhere. Anytime. Across all devices.

A microscope has a $20 c m$ tube length. What focal-length objective will give total magnification localid="1649845070556" $500 \times$ when used with an eyepiece having a focal length $5.0 c m$ ?