/*! 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} Q1Q If the magnetic field of a light... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 33: Q1Q (page 1000)

If the magnetic field of a light wave oscillates parallel to a y axis and is given byBy=Bmsin(kz-蝇t), (a) in what direction does the wave travel and (b) parallel to which axis does the associated electric field oscillate?

Short Answer

Expert verified

(a) The direction of wave travel is along the z-axis.

(b) The direction of oscillation of the electric field is along the x-axis.

Step by step solution

01

The given data

The equation of the magnetic field oscillating parallel to the y axis is given as:

By=Bmsinkz-蝇t

02

Understanding the concept of electromagnetic wave

An electromagnetic wave consists of an electric field and a magnetic field, and the direction of the propagating electromagnetic wave is perpendicular to the plane in which the electric field and magnetic field lie. Thus, by analyzing the given equation, we can find the direction of the electromagnetic wave and the direction of the electric field component.

03

a) Calculation of the direction of wave

From the given equation, the term "kz" denotes that the wave travels along the z 鈥揹irection.

Hence, the direction of the wave is towards the z-axis.

04

b) Calculation of the direction of the electric field component

As the magnetic field is oscillating parallel to the y axis and the wave is traveling along the z direction. Thus, we can say that the electric field must oscillate parallel to the x-axis, perpendicular to both the directions of the propagation of the wave and the magnetic field.

Hence, the direction of the component of the electric field is towards the x-axis.

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

A laser beam of intensity I reflects from a flat, totally reflecting surface of area A, with a normal at angle 胃with the beam.Write an expression for the beam鈥檚 radiationpressurepr(胃)onthe surface in terms of the beam鈥檚 pressurewhen胃=00.

Someone plans to float a small, totally absorbing sphere 0.500m above an isotropic point source of light so that the upward radiation force from the light matches the downward gravitational force on the sphere. The sphere鈥檚 density is 19.0 g/cm3, and its radius is 2.00mm. (a) What power would be required of the light source? (b) Even if such a source were made, why would the support of the sphere be unstable?

In the figure, initially unpolarized light is sent into a system of three polarizing sheets whose polarizing directions make angles of胃1=胃2=胃3=50掳with the direction of theyaxis. What percentage of the initial intensity is transmitted by the system? (Hint: Be careful with the angles.)

Figure:

1 A helium鈥搉eon laser,radiating at, 632.8nmhas a power output of 3.0mW. The beam diverges (spreads) at angle胃=0.17mrad(Fig. 33-72). (a) What is the intensity of the beamfrom the laser? (b) What is the power of a point source providing that intensity at that distance?

Each part of Fig. 33-34 shows light that refracts through an interface between two materials. The incident ray (shown gray in the figure) consists of red and blue light. The approximate index of refraction for visible light is indicated for each material. Which of the three parts show physically possible refraction? (Hint: First consider the refraction in general, regardless of the color, and then consider how red and blue light refract differently?
See all solutions

Recommended explanations on Physics Textbooks

Fluids

Read Explanation

Engineering Physics

Read Explanation

Fundamentals of Physics

Read Explanation

Fields in Physics

Read Explanation

Electromagnetism

Read Explanation

Wave Optics

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.