jee_main_2026_22_january_morning - Electromagnetic Waves Topics

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QUESTION #47 Dielectric Constant of Medium
The electric field of a plane electromagnetic wave, travelling in an unknown non-magnetic medium is given by, Ey=20 (3× 10⁶x-4.5× 10¹⁴t) V/m (where x, t and other values have S.I. units). The dielectric constant of the medium is \_\_\_\_. (speed of light in free space is 3 × 10⁸ ~m/s)
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

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