/*! 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. 19 You need to use your cell phone,... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 33: Q. 19 (page 955)

You need to use your cell phone, which broadcasts an 800MHzsignal, but you're behind two massive, radio-wave absorbing buildings that have only a15mspace between them. What is the angular width, in degrees, of the electromagnetic wave after it emerges from between the buildings?

Short Answer

Expert verified

Angular width of electromagnetic radiation is2.86掳.

Step by step solution

01

Formula for angular width 

The width of the angular fringe is that the distance seen between centre fringe and therefore the slit. It also demonstrates how far the fringes are angularly.

Angular width is,

胃=2位a

位is wavelength.

ais length of the slit.

02

Calculation of angular width

Angular width of electromagnetic wave:

胃=2位a

So,

胃=2c补谓

=2脳3脳10815脳8脳108

=0.05rad

=2.86掳

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

FIGURE shows light of wavelength 位incident at angle 蠒on a reflection grating of spacing d. We want to find the angles um at which constructive interference occurs.

a. The figure shows paths 1and 2along which two waves travel and interfere. Find an expression for the path-length difference 螖r=r2鈭�r1.33

b. Using your result from part a, find an equation (analogous to Equation localid="1650299740348" (33.15)for the angles localid="1650299747450" 胃mat which diffraction occurs when the light is incident at angle localid="1650299754268" 鈭�. Notice that m can be a negative integer in your expression, indicating that path localid="1650299766020" 2is shorter than path localid="1650299773517" 1.

c. Show that the zeroth-order diffraction is simply a 鈥渞eflection.鈥� That is, localid="1650299781268" 胃0=蠒

d. Light of wavelength 500 nm is incident at localid="1650299787850" 蠒=40鈭�on a reflection grating having localid="1650299794954" 700reflection lines/mm. Find all angles localid="1650299802944" 胃mat which light is diffracted. Negative values of localid="1650299812949" 胃m
are interpreted as an angle left of the vertical.

e. Draw a picture showing a single localid="1650299823499" 500nmlight ray incident at localid="1650299833529" 蠒=40鈭�and showing all the diffracted waves at the correct angles.

Infrared light of wavelength 2.5渭milluminates a 0.20-mmdiameter hole. What is the angle of the first dark fringe in radians? In degrees?

In a single-slit experiment, the slit width is 200 times the wavelength of the light. What is the width (inmm)of the central maximum on a screen 2.0m behind the slit?

FIGURE P33.49 shows the interference pattern on a screen 1.0mbehind a diffraction grating. The wavelength of the light is 620nm. How many lines per millimeter does the grating have?

You've found an unlabeled diffraction grating. Before you can use it, you need to know how many lines per it has. To find out, you illuminate the grating with light of several different wavelengths and then measure the distance between the two first-order bright fringes on a viewing screen 150cmbehind the grating. Your data are as follows:


Use the best-fit line of an appropriate graph to determine the number of lines per mm.
See all solutions

Recommended explanations on Physics Textbooks

Physical Quantities And Units

Read Explanation

Measurements

Read Explanation

Modern Physics

Read Explanation

Atoms and Radioactivity

Read Explanation

Space Physics

Read Explanation

Fundamentals of Physics

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.