[" An EM wave from air enters a medium.The electric fields are "vec E_(1)=E_(01)hat x cos[2 pi v((2)/(c)-t)]" in air and "],[vec E_(2)=E_(0)hat x cos[k(2z-ct)]" in medium,where the wave number "k" and frequency v refer to their values "],[" in air.The medium is non-magnetic.If "e_(4)" and "e_(4)" refer to relative permittivity of air and medium "],[" respectively,which of the following options is correct? "]

An EM wave from air enters a medium. The electric fields are vec(E )_(1)=E_(01)hat(x)cos[2pi v((z)/(c )-t)] in air and vec(E )_(2)=E_(02)hat(x)cos [k(2z-ct)] in medium, where the wave number k and frequency v refer to their values in air. The medium is non - magnetic. If in_(r_(1)) and in_(r_(2)) refer to relative permittivities of air and medium respectively, which of the following options is correct ?

An EM wave from air enters a medium. The electric fields are overset(vec)E_(1)=E_(01)hatx cos[2piv((z)/(c )-t)] in air and overset(vec)E=E_(02)hatx cos [k(2z-ct)] in medium, where the wave number k and frequency v refer to their values in air. The medium is non-magnetic. If in_(r_(1)) and in_(r_(2)) refer to relative permittivities of air and medium respectively, which of the following options is correct ?

An EM wave from air enters a medium. The electric fields are overset(vec)E_(1)=E_(01)hatx cos[2piv((z)/(c )-t)] in air and overset(vec)E=E_(02)hatx cos [k(2z-ct)] in medium, where the wave number k and frequency v refer to their values in air. The medium is non-magnetic. If in_(r_(1)) and in_(r_(2)) refer to relative permittivities of air and medium respectively, which of the following options is correct ?

An EM wave from air enters a medium .The electric fields are vecE _1 = vecE_(01 ) hat x cos [ 2 pi v ((z)/(c )-t)] in air and vecE_2 = E_(02) hat x cos [ k ( 2z-c t ) ] in medium , where the wave number k and frequency v refer to their values in air . the medium is non - magnetic . if epsi_(r_1) and epsi_(r_2) refer to relative permittivities of air and medium respectively , which of the following options is correct ?

An EM wave from air enters a medium . The electric fields are vecE_1=E_(01)hatxcos[2pinu(z/c-t)] in air and vecE_2=E_(02) hatxcos[k(2z-ct)] in medium , where the wave number k and frequency nu refer to their values in air . The medium is non-magnetic . If in_(r_1) and in_(r_2) refer to relative permittivities of air and medium respectively , which of the following options is correct ?

The electric field of a plane electromagnetic wave in vacuum is represented by E_(x)=0, E_(y)=0.5 cos[2pi xx10^(8) (t-x//c)] " and " E_(z)=0 . Determine the wavelength of the wave.

The displacement of a charge Q in the electric field vec(E) = e_(1)hat(i) + e_(2)hat(j) + e_(3) hat(k) is vec(r) = a hat(i) + b hat(j) . The work done is

The displacement of a charge Q in the electric field vec(E) = e_(1)hat(i) + e_(2)hat(j) + e_(3) hat(k) is vec(r) = a hat(i) + b hat(j) . The work done is