When the electromagnetic wave propagate through free space,how does it transport energy in the absence of any material medium?

How is electromagnetic wave produced? Draw a sketch of a plane electromagnetic wave propagating along x-axis depicting the directions of the oscillating electric and magnetic field.

In these question, a statement of assertion followed by a statement of reason is given .Choose the correct answer out of the following choices: Assertion and reason both are correct statements and reason is correct explanation for assertion. Assertion and reason both are correct statements but reason is not correct explanation for assertion. Assertion is correct statement but reason is wrong statement. Assertion is wrong statement but reason is correct statement. Assertion: The electromagnetic waves exert pressure on the surface of the matter, when they fall on it. Reason: It is because, electromagnetic waves transport momentum.

When can a charge act as a source of electromagnetic wave? How are there directions of electric and magneitc field vectors, in an electromagnetic wave related to each other and to the direction of propagation of the wave? Which physical quantity, if any has the same value for waves belonging to the differnt parts of the electromangetic spectrum?

In these question, a statement of asertion followed by a statement of reason is given .Choose the correct answer out of the following choices: Assertion and reason both are correct statements and reason is correct explanation for assertion. Assertion and reason both are correct statements but reason is not correct explanation for assertion. Assertion is correct statement but reason is wrong statement. Assertion is wrong statement but reason is correct statement. Asssertion:When an electromagnetic wave enters an optically denser medium ,its frequency remains the same but its waelength and speed decrease Reason:The frequency is an inherent charactgerstic of the radiation.The wavelength and hence the speed decreases by a factor n,where n is refreactive index of the medium

An electromagnetic wave is travelling in a medium with a velocity vecv=v hati . The electric field oscillations, of this electromagnetic wave, all along the Y-axis. How are the magnitude of the electric and magnetic fields in the electromagnetic wave related to each other?

Electromagnetic spectrum Electromagnetic waves are coupled time varying electric and magnetic fields, propagating in space, with the speed very close to that of light (3xx10^8 ms^-1) . An the orderly distribution and classification of electromagnetic waves according to their frequency or wavelength is called electromagnetic spectrum. electromagnetic waves inclued visible light, ultraviolet waves, infra red waves, X-rays, gamma-rays, microwaves and radiowaves. The electromagnetic waves used in surgery for detection of fractures, diseased organs, forensic matter like bullet, etc, are

The velocity of electromagnetic waves in free space is 3 xx 10^8 m s^(-1) .The frequency of a radio wave of wave length 150 m is