JEE Main Electromagnetic Waves — practice questions
22 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice JEE Main Electromagnetic Waves in the app →In an EM wave travelling along the $+z$ direction with $\vec{E}$ along $+x$, the magnetic field $\vec{B}$ is aThe speed of an EM wave in vacuum equals:An FM radio broadcasts at $92.7$ MHz. The wavelength of the carrier in air is approximately:Which of the following EM waves has the shortest wavelength?Which additional current did Maxwell propose to remove the inconsistency?Maxwell argued that a magnetic field is generated not only by a current but also by a:Who experimentally demonstrated the existence of electromagnetic waves in 1885?According to Maxwell's theory, which charges radiate electromagnetic waves?A basic source of electromagnetic waves is which arrangement of charge?Microwaves are suitable for radar systems in aircraft navigation because of their:In an electromagnetic wave, the electric and magnetic fields are:Relative to the direction of propagation, the two fields of an electromagnetic wave are:The value of c derived by Maxwell equals the speed of light obtained from which measurements?The energy carried by a propagating electromagnetic wave comes at the expense of the:Cellular phones transmit voice communication using waves in which band?Infrared radiation keeps the Earth warm through which effect?Most ultraviolet radiation is absorbed in which layer of the atmosphere?The electromagnetic spectrum stretches from gamma rays up to which waves?In a microwave oven, the frequency is chosen to match the resonant frequency of:Ultraviolet radiation can be focussed into narrow beams for which surgical use?Whose technological use of electromagnetic waves led to the revolution in communication?Which of these were only barely established at the time Maxwell was working?