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Chapter 35: Q. 48 (page 1019)

Your task in physics laboratory is to make a microscope from two lenses. One lens has a focal length of 2.0 cm, the other 1.0 cm. You plan to use the more powerful lens as the objective, and you want the eyepiece to be 16 cm from the objective.
a. For viewing with a relaxed eye, how far should the sample be from the objective lens?
b. What is the magnification of your microscope?

Short Answer

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Step by step solution

01

Part (a) step1 : Given Information

Simplify the objective lens viewing with a relaxed eye

02

Part (a) Step 2 : Calculation

03

Part (b) Step 1 : Given Information

The magnification of microscope

04

Part (b) Step 2 : Simplify

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Most popular questions from this chapter

Two converging lenses with focal lengths of $40 c m$ and $20 c m$ are $10 c m$ apart. A $2.0 c m$ tall object is $15 c m$ in front of the $40 c m$ focal-length lens.

a. Use ray tracing to find the position and height of the image. Do this accurately using a ruler or paper with a grid, then make measurements on your diagram.

b. Calculate the image position and height. Compare with your ray-tracing answers in part a.

In FIGURE P $35.30$ , what are the position, height, and orientation of the final image? Give the position as a distance to the right or left of the lens.

Ellen wears eyeglasses with the prescription $- 1.0 D$ .

a. What eye condition does Ellen have?

b. What is her far point without the glasses?

You’ve been asked to build a telescope from a $2.0 x$ magnifying lens and a $5.0 x$ magnifying lens.

a. What is the maximum magnification you can achieve?

b. Which lens should be used as the objective? Explain.

c. What will be the length of your telescope?

A diffraction-limited lens can focus light to a 10 $μ m$ diameter spot on a screen. Do the following actions make the spot diameter larger, make it smaller, or leave it unchanged?

A. Decreasing the wavelength of the light.

B. Decreasing the lens diameter.

C. Decreasing the lens focal length.

D. Decreasing the lens-to-screen distance.

See all solutions

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