JEE Main & Advanced
Physics
EM Waves
JEE PYQ-Electro Magnetic Waves
question_answer
A plane electromagnetic wave in a non-magnetic dielectric medium is given by \[\overset{\to }{\mathop{\operatorname{E}}}\,={{\overset{\to }{\mathop{\operatorname{E}}}\,}_{0}}\]\[(4\times {{10}^{-7}}x-50t)\] with distance being in meter and time in seconds. The dielectric constant of the medium is: [JEE ONLINE 22-04-2013]