Electric field of plane electromagnetic wave propagating through a non-magnetic medium is given by E = 20cos(2 … 10¹⁰ t … 200x) V/m. The dielectric constant of the medium is equal to : (Take …_r = 1)

Option A. Given, electric field,

Electromagnetic Waves

JEE Main 2021 · 1 Sep, Evening shift · Q6783

PhysicsMedium120×since 2002Q6783

Electric field of plane electromagnetic wave propagating through a non-magnetic medium is given by E = 20cos(2

\times

10¹⁰ t

-

200x) V/m. The dielectric constant of the medium is equal to : (Take

\mu

_r = 1)