/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 23 Infrared telescope, which use sp... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 35: Q. 23 (page 1017)

Infrared telescope, which use special infrared dictators, are able to do peer farther into star-forming regions of the galaxy because infrared light is not scattered as strongly as is visible light by the tenuous clouds of hydrogen gas from which new stars are created. for what wavelength of light is the scattering only 1%that of light with visible wavelength of 500nm?

Short Answer

Expert verified

The wavelength of light is the scattering only 1%that of light with a visible wavelength of 500nmis1518nm.

Step by step solution

01

Given information

We have given that:

位=500nm.

We need to find the wavelength.

02

Simplification

As we know the intensity of scattered light depends inversely on the fourth power of the wavelength.

Iscattered伪位-4

From the Rayleigh scattering, we will get the wavelength of light is the scattering only 1%that of light with a visible wavelength of 500nm

0.01=位5004

位=5000.014

位=1581nm.

Hence the wavelength 1581nmrepresents a short-range infrared region.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

High-power lasers are used to cut and weld materials by focusing the laser beam to a very small spot. This is like using a magnifying lens to focus the sun light to a small spot that can burn things. As an engineer you have designed a laser cutting device in which the material to be cut is placed 5.0cmbehind the lens. you have selected a high-power laser with a wavelength of

your calculation indicates that the laser must be focused to a 5.0-渭m-diameterspot in order to have sufficient power to make the cut. what is the minimum diameter of lens you must install?

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

A reflecting telescope is built with a 20cm-diameter mirror having an1.00m focal length. It is used with an10脳eyepiece.

What are:

(a) the magnification?

(b) the f鈥�numberof the telescope?

An astronomer is trying to observe two distant stars. The stars are marginally resolved when she looks at them through a filter that passes green light with a wavelength near 550 nm. Which of the following actions would improve the resolution? Assume that the resolution is not limited by the atmosphere.

A. Changing the filter to a different wavelength. If so, should she use a shorter or a longer wavelength?

B. Using a telescope with an objective lens of the same diameter but a different focal length. If so, should she select a shorter or a longer focal length?

C. Using a telescope with an objective lens of the same focal length but a different diameter. If so, should she select a larger or a smaller diameter?

D. Using an eyepiece with a different magnification. If so, should she select an eyepiece with more or less magnification?

A microscope with a tube length of 180mmachieves a total magnification of 800Xwith a 40Xobjectives and a 20Xeye piece. The microscope is focused for viewing with a related eye. how far is the sample from the objective lens?
See all solutions

Recommended explanations on Physics Textbooks

Fluids

Read Explanation

Oscillations

Read Explanation

Kinematics Physics

Read Explanation

Particle Model of Matter

Read Explanation

Space Physics

Read Explanation

Atoms and Radioactivity

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.