Home
Class 12
PHYSICS
Electri field of a plane electromagnetic...

Electri field of a plane electromagnetic wave propagating through a non - magnetic medium is given by `E = 20 cos (2 xx 10^10t - 200x) V//m`. The dielectric constant of the medium is equal to :
(Take `mu_r =1`)

A

`1/3`

B

`2`

C

3

D

9

Text Solution

AI Generated Solution

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • JEE MAIN 2021

    JEE MAINS PREVIOUS YEAR|Exercise PHYSICS SECTION B|30 Videos

Similar Questions

Explore conceptually related problems

Electromagnetic wave in a medium of mu_(r) = 1 is given as E = 20 sin (20 x 10^10 - 20 x 10^2 x) . Dielectric constant of medium is 1/x then find x

The electric field of a plane electromagnetic wave propagating along the x direction in vacuum is vecE = E_0 hatj cos (omegat - kx) . The magnetic field vecB , at the moment t=0 is :

Knowledge Check

  • An electromagnetic wave travelling through a transparent medium is given by E_(x)(y,t)=E_(ax)sin2pi[y/(5xx10^(-7))-3xx10^(14)t] in SI unit then the refractive index of medium is,

    A
    `1.2`
    B
    `1.50`
    C
    `1.33`
    D
    `2`

  • A plane electromagnetic wave E_(z) = 100 "cos" (6xx10^(8)t +4x) V/m propagating in medium of dielectric constant is

    A
    1.5
    B
    2
    C
    2.4
    D
    4

  • The magnetic field in a plane electromagnetic wave is given by B_(y) = 2 xx 10^(-7) sin (0.5 xx 10^(3)x + 1.5 xx 10^(11) t) . This electromagnetic wave is

    A
    a visible light
    B
    an infrared wave
    C
    a microwave
    D
    a radio wave

    • Similar Questions

    Explore conceptually related problems

    A plane electromagnetic wave in a non-magnetic dielectric medium is given by vecE = vecE_(0)(4 xx 10^(-7) x - 50 t) with distance being in meter and time in seconds. The dielectric constant of the medium is :

    The electric field associated with an electromagnetic wave propagating in a dielectric medium is given by vecE =30(2 hatx + haty )sin[2 pi (5 xx 10^14t-10^7/3z)]V m^(-1).Which of the following option(s) is (are) correct? [Given: The speed of light in vacuum, c = 3 x 10^8 ms^(-1)]

    The magnetic field in a plane electromagnetic wave is given by B = 200 (muT) sin 4 xx 10'^(-5)s^(1) (t-x//c) . Find the maximum magnetic and electric fields.

    In a plane electromagnetic wave propagating in space has an electric field of amplitude 9 × 10^(3) V//m , then the amplitude of the magnetic field is

    The magnetic field of an electromagnetic wave is given by 3 xx 10^(-7) sin (10^(3) x + 6.28 xx 10^(12)t ). The wave length of the electromagnetic wave is

    Home
    Profile