Nature and Speed of Electromagnetic Waves

JEE Main Physics · Electromagnetic Waves · 9 questions, latest first

• The electric field of an electromagnetic wave travelling through a medium is given by E(x, t)=25 sin (2.0 × 10^15 t-10^7 x) n…202628 January, Shift 1 · Q41
• The ratio of speeds of electromagnetic waves in vacuum and a medium, having dielectric constant k=3 and permeability of μ=2 μ_0,…202623 January, Shift 2 · Q41
• The electric field of a plane electromagnetic wave, travelling in an unknown nonmagnetic medium is given by, E_y=20 sin (3 × 10^6…202622 January, Shift 1 · Q49
• If an optical medium possesses a relative permeability of 10/(π) and relative permittivity of 1/0.0885, then the velocity of…20254 April, Shift 2 · Q47
• Electromagnetic waves travel in a medium with speed of 1.5 × 10^8 m s^-1. The relative permeability of the medium is 2.0. The…20246 April, Shift 1 · Q39
• If frequency of electromagnetic wave is 60 MHz and it travels in air along z direction then the corresponding electric and…20241 February, Shift 2 · Q44
• In a medium the speed of light wave decreases to 0.2 times to its speed in free space The ratio of relative permittivity to the…202331 January, Shift 1 · Q30
• Given below are two statements: Statement I: Electromagnetic waves are not deflected by electric and magnetic field. Statement…202329 January, Shift 2 · Q15
• Which of the following are true? A. Speed of light in vacuum is dependent on the direction of propagation. B. Speed of light in a…202329 January, Shift 1 · Q7