Get 2 FREE Instant-Explanations on Filo with code FILOAPP

Home

Physics Part-I

Electromagnetic Waves

In a plane electromagnetic wave, the electric field oscillates

Physics Part-I

Class 12

NCERT

Chapter 1: Electric Charges and Fields

47 questions

Chapter 2: Electrostatic Potential and Capacitance

46 questions

Chapter 3: Current Electricity

33 questions

Chapter 4: Moving Charges and Magnetism

41 questions

Chapter 5: Magnetism and Matter

36 questions

Chapter 6: Electromagnetic Induction

28 questions

Chapter 7: Alternating Current

37 questions

Chapter 8: Electromagnetic Waves

20 questions

The terology of different parts of the electromagnetic spectrum is given in the text. Use the formula

E = h ν

(for energy of a quantum of radiation: photon) and obtain the photon energy in units of eV for different parts of the electromagnetic spectrum. In what way are the different scales of photon energies that you obtain related to the sources of electromagnetic radiation?

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of

2.0 \times 1 0^{10} Hz

and amplitude

48 V m^{- 1}

(a) What is the wavelength of the wave?

(b) What is the amplitude of the oscillating magnetic field?

\times 1 0^{8} m s^{- 1}

]

Suppose that the electric field part of an electromagnetic wave in vacuum is

E = (3.1 N / C) cos [(1.8 r a d / m) y + (5.4 \times 1 0^{6} r a d / s) t] \hat{i}

(a) What is the direction of propagation?
(b) What is the wavelength

λ

?
(c) What is the frequency v?
(d) What is the amplitude of the magnetic field part of the wave?
(e) Write an expression for the magnetic field part of the wave.

View all question

Question

Medium

Solving time: 4 mins

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of $2.0 \times 1 0^{10} Hz$ and amplitude $48 V m^{- 1}$ .
(a) What is the wavelength of the wave?
(b) What is the amplitude of the oscillating magnetic field?
(c) Show that the average energy density of the E field equals the average energy density of the B field. [c = 3 $\times 1 0^{8} m s^{- 1}$ ]

Name: Video solution 1: [Solved] In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.0×1010Hz and amplitude 48Vm−1.(a) What is the wavelength of the wave?(b) What is the amplitude of the oscillating magnetic field?(c) Show that the average energy density of the E field equals the average energy density of the B field. [c = 3 ×108ms−1] - Physics Part-I
Uploaded: 2022-08-01T05:08:05.000Z
Duration: 8 min
Description: Video solution 1: [Solved] In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.0×1010Hz and amplitude 48Vm−1.(a) What is the wavelength of the wave?(b) What is the amplitude of the oscillating magnetic field?(c) Show that the average energy density of the E field equals the average energy density of the B field. [c = 3 ×108ms−1] - Physics Part-I

Views: 5,715 students

Updated on: Aug 1, 2022

Book:

Physics Part-I (NCERT)

Found 2 tutors discussing this question

Charlotte Discussed

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of

2.0 \times 1 0^{10} Hz

and amplitude

48 V m^{- 1}

(a) What is the wavelength of the wave?

(b) What is the amplitude of the oscillating magnetic field?

\times 1 0^{8} m s^{- 1}

]

9 mins ago

Discuss this question LIVE

9 mins ago

Text solutionVerified

(a)

The wavelength is given by

λ = \frac{c}{v} = \frac{3 \times 1 0 ^{8}}{2 \times 1 0 ^{10}} = 1.5 \times 1 0^{- 2} m

(b)

B_{o} = E_{o} / c = 1.6 \times 1 0^{- 7} T

(c)

Energy density due to the electric field,

E_{E} = \frac{1}{2} ϵ_{o} E^{2}

Energy density due to the magnetic field,

E_{B} = \frac{1}{2} B^{2} / μ_{o}

also,

c = \frac{1}{ϵ _{0} μ _{o}}

on solving above equations,

E_{E} = E_{B}

Was this solution helpful?

Report

Filo tutor solutions (2)

Learn from their 1-to-1 discussion with Filo tutors.

8 mins

Uploaded on: 8/1/2022

Ask your question, on a video call with tutor

Connect instantly with this tutor

Connect now

Taught by

Bhupender

Total classes on Filo by this tutor - 1,114

Teaches : Physics, Organic Chemistry, Inorganic Chemistry

Connect instantly with this tutor

Connect now

Notes from this class (3 pages)

Download

Was this solution helpful?

111

Report

5 mins

Uploaded on: 4/20/2022

Ask your question, on a video call with tutor

Connect instantly with this tutor

Connect now

Taught by

DARSHANA

Total classes on Filo by this tutor - 14,870

Teaches : Physics, Science, Mathematics

Connect instantly with this tutor

Connect now

Was this solution helpful?

Report

One destination for complete JEE/NEET preparation

One destination to cover all your homework and assignment needs

Learn Practice Revision Succeed

Instant 1:1 help, 24x7

60, 000+ Expert tutors

Textbook solutions

Big idea maths, McGraw-Hill Education etc

Essay review

Get expert feedback on your essay

Schedule classes

High dosage tutoring from Dedicated 3 experts

Trusted by 4 million+ students

Practice more questions from Physics Part-I (NCERT)

The terology of different parts of the electromagnetic spectrum is given in the text. Use the formula

E = h ν

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of

2.0 \times 1 0^{10} Hz

and amplitude

48 V m^{- 1}

(a) What is the wavelength of the wave?

(b) What is the amplitude of the oscillating magnetic field?

\times 1 0^{8} m s^{- 1}

]

Suppose that the electric field part of an electromagnetic wave in vacuum is

E = (3.1 N / C) cos [(1.8 r a d / m) y + (5.4 \times 1 0^{6} r a d / s) t] \hat{i}

(a) What is the direction of propagation?
(b) What is the wavelength

λ

?
(c) What is the frequency v?
(d) What is the amplitude of the magnetic field part of the wave?
(e) Write an expression for the magnetic field part of the wave.

View all

Stuck on the question or explanation?

Connect with our Physics tutors online and get step by step solution of this question.

231 students are taking LIVE classes

Question Text	In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of $2.0 \times 1 0^{10} Hz$ and amplitude $48 V m^{- 1}$ . (a) What is the wavelength of the wave? (b) What is the amplitude of the oscillating magnetic field? (c) Show that the average energy density of the E field equals the average energy density of the B field. [c = 3 $\times 1 0^{8} m s^{- 1}$ ]
Updated On	Aug 1, 2022
Topic	Electromagnetic Waves
Subject	Physics
Class	Class 12
Answer Type	Text solution:1 Video solution: 2
Upvotes	208
Avg. Video Duration	6 min

Text solutionVerified

Filo tutor solutions (2)

Practice more questions from Physics Part-I (NCERT)

Practice questions from Physics Part-I (NCERT)

Practice more questions from Electromagnetic Waves

Practice questions on similar concepts asked by Filo students

Text solutionVerified

Filo tutor solutions (2)

Practice more questions from Physics Part-I (NCERT)

Practice questions from Physics Part-I (NCERT)

Practice more questions from Electromagnetic Waves

Practice questions on similar concepts asked by Filo students

Related books for questions on Electromagnetic Waves