PROPAGATION OF ELECTROMAGNETIC WAVES

Electromagnetic waves Electromagnetic waves are those waves in which there are sinusoidal variations of electric and magnetic fields at right angle to each other as well as right angle to the direction of propagation. The ratio of electric vector and magnetic vector gives the velocity of light and vecExxvecB gives the direction of propagation of electromagnetic wave. If vecE and vecB represent electric and magnetic field vectors of the electromagnetic wave, the direction of propagation of electromagnetic wave is along.

I : Electromagnetic wave is a mechanical wave. II : The energy crossing per unit area per unit time and perpendicular to the direction of propagation of electromagnetic wave is called intensity. Which one is correct?

In an electromagnetic wave the electric field vector and magnetic field vector are given as vecE=E_(0)hati and vecB=B_(0)hatk respectively. The direction of propagation of electromagnetic wave is along:

The electric field of a plane electromagnetic wave in vacuum is represented by vecE_x=0 , vecE_y=0.5 cos[2pixx10^8(t-x/c)], vecE_z=0 (a) What is the direction of propagation of electromagnetic wave? (b) Determine the wavelength of the wave. (c) Compute the component of associated magnetic field.

The electric field of a plane electromagnetic wave in vacuum is represented by vecE_x=0 , vecE_y=0.5 cos[2pixx10^8(t-x/c)], vecE_z=0 (a) What is the direction of propagation of electromagnetic wave? (b) Determine the wavelength of the wave. (c) Compute the component of associated magnetic field

Give (brief) reasons for the following : (a) We use 'sky wave' mode of propagation of electromagnetic waves, only for frequencies upto 30 to 40 MHz. (b) The LOS communication, via space waves, has a (fairly) limited range. (c) A mobile phone user gets uninterrupted link to talk while walking.

Give (brief) reasons for the following : (a) We use 'sky wave' mode of propagation of electromagnetic waves, only for frequencies upto 30 to 40 MHz. (b) The LOS communication, via space waves, has a (fairly) limited range. (c) A mobile phone user gets uninterrupted link to talk while walking.

During the propagation of electromagnetic wave in vacuum, the electric field vecE and the magnetic field vecB at each point - (A) Are mutually perpendicular. (B) Are in same phase. (C) Carry equal amount of energy by dividing average energy of the wave between them. (D) The ratio of amplitude of these fields is equal to the speed of light.

Electromagnetic waves are those waves in which these are sinusoidal variation of electric and magnetic fields at right angle to each other as well as right angle ot the direction of propagation. The ratio of electric vector and magnetic vector gives the velocity of light and vecExxvecB gives the direction of propagation of electromagnetic wave. The electric field intensity produced by the radiations coming from 100 W bulb at a 3 m distance of E. The electric field intensity produced by the radiations coming from the 50 W bulb at the same distance is